Rare Beauty Always an Optimist Weightless Eye Primer Review

Eye Shadow

Always an Optimist Weightless Eye Primer

Rare Beauty

Always an Optimist Weightless Eye Primer

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Use With Caution

No Warnings

Not Rated

$21

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Info

Eye Shadow

Face Primer

Always an Optimist Weightless Eye Primer

Rare Beauty

Description

A weightless, hydrating eye primer that smooths lids while prepping you for longer-lasting, amped-up color that won’t crease, fade, or smudge all day.

Formula

Aqua/Water/Eau

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No Warnings

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No Warnings

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Insufficient Data

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Reference

Cosmetic Ingredient Review

Source

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Synthetic Antioxidant

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Liquid Plastic

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Chemical Sunscreen

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Paraben

Warning

Phalate

Warning

Known Skin Sensitizer

Reference

European Union

Warning

Possible Phalate

Aqua/Water/Eau is simply the term used for water in cosmetic formulations. It's primarily used as a solvent in cosmetics, meaning it's used to dissolve many of the other ingredients that make up a product. When you see Aqua/Water/Eau listed in the ingredients of a product, it's typically referring to purified water - free of toxins, pollutants and microbes.

Most cosmetics contain a large amount of water (often 70-80% of the total), making it the most commonly used ingredient in such products. The water used in cosmetics can be of different types, such as distilled water, mineral water, or thermal water, which all offer various properties and benefits.

Here are some of the key functions of water in cosmetic products:

Solvent: As mentioned, water acts as a solvent for many ingredients, helping to dissolve them and make a homogeneous solution.
Humectant: Water also acts as a humectant, meaning it helps to retain or preserve moisture. This is why it's often used in products like moisturizers, lotions, and creams.
Diluent: Water is used as a diluent to reduce the concentration of other ingredients. This is particularly useful when dealing with potent substances that might cause irritation or other issues if used undiluted.
Carrier: Water can act as a carrier, helping to spread other ingredients across the skin.
Rehydration: Water can also rehydrate dry or dehydrated skin and hair, providing a feeling of freshness and comfort.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Isododecane

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Insufficient Data

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Reference

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Warning

Synthetic Antioxidant

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Liquid Plastic

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Chemical Sunscreen

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Paraben

Warning

Phalate

Warning

Known Skin Sensitizer

Reference

European Union

Warning

Possible Phalate

Isododecane is a synthetic hydrocarbon ingredient commonly used in cosmetic formulations. It is a colorless, odorless, and volatile liquid that has a lightweight and non-greasy texture. Its primary use cases in cosmetic formulations include:1. Solvent: Isododecane acts as a solvent for various ingredients, helping them dissolve and mix well in the formulation. This ensures a smooth and even application of the product on the skin.2. Texture enhancer: Due to its lightweight and non-greasy nature, Isododecane improves the texture of cosmetic products, making them easy to spread and absorb into the skin.3. Evaporative agent: Isododecane evaporates quickly, leaving behind a dry, matte finish on the skin. This makes it an ideal ingredient for matte makeup products, such as foundations, lipsticks, and eyeshadows.4. Film-former: Isododecane forms a thin, flexible film on the skin, which helps in providing long-lasting wear and water resistance to makeup products.5. Emollient: Although not as moisturizing as other emollients, Isododecane can help to soften and smooth the skin, providing a comfortable feel in cosmetic products.Overall, Isododecane is a versatile ingredient that enhances the performance, texture, and wear of various cosmetic products, including makeup, skincare, and hair care products.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Talc

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Insufficient Data

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Reference

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Synthetic Antioxidant

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Liquid Plastic

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Chemical Sunscreen

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Paraben

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Phalate

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Known Skin Sensitizer

Reference

European Union

Warning

Possible Phalate

Talc is a naturally occurring mineral, primarily composed of magnesium, silicon, and oxygen. In cosmetic formulations, it is used as a versatile ingredient due to its soft, smooth texture, excellent absorbency, and ability to improve the product's performance.Some common use cases of talc in cosmetic formulations include:1. Powder-based products: Talc is widely used in face powders, eyeshadows, and blushes, where it helps to create a smooth, silky texture and allows for even application on the skin.2. Absorbent: Talc's absorbent properties make it suitable for use in products like body powders and deodorants, where it helps to absorb excess moisture and oil, keeping the skin dry and comfortable.3. Anti-caking agent: Talc helps prevent the caking and clumping of powder-based products, ensuring they maintain a consistent texture and appearance.4. Opacifier: Talc can be used to add opacity to cosmetic products, giving them a more matte and less transparent appearance.5. Slip and adhesion: Talc improves the slip and adhesion of makeup products, allowing them to glide smoothly on the skin and stay in place for longer periods.Overall, talc is a valuable ingredient in cosmetic formulations due to its multiple benefits, including improving texture, absorbency, and product performance. However, it is essential to ensure that the talc used in cosmetics is free from contaminants and sourced responsibly to ensure consumer safety.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Dimethicone

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Reference

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Synthetic Antioxidant

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Paraben

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Phalate

Warning

Known Skin Sensitizer

Reference

European Union

Warning

Possible Phalate

Dimethicone, also known as polydimethylsiloxane (PDMS), is a silicone-based polymer commonly used in cosmetic formulations. It is a versatile ingredient that provides several benefits to various cosmetic products.In simple terms, dimethicone is a clear, odorless, and non-greasy silicone oil that creates a protective barrier on the skin or hair. It is widely used in skincare, haircare, and makeup products due to its unique properties.Some of the key use cases of dimethicone in cosmetic formulations include:1. Moisturizing agent: Dimethicone helps to lock in moisture by forming a barrier on the skin's surface, preventing water loss and keeping the skin hydrated.2. Skin protectant: It creates a protective layer on the skin, shielding it from environmental aggressors such as pollution, dirt, and irritants.3. Emollient: Dimethicone has a smooth and silky texture, which helps to soften and smooth the skin, improving its overall appearance and texture.4. Primer: In makeup products, dimethicone is often used as a primer, providing a smooth base for makeup application and improving its longevity.5. Hair conditioner: In haircare products, dimethicone helps to detangle, reduce frizz, and add shine to the hair by forming a protective coating around each hair strand.6. Thickening agent: Dimethicone can also be used to adjust the viscosity and texture of cosmetic formulations, making them thicker and more spreadable.Overall, dimethicone is a versatile and widely used ingredient in cosmetic formulations due to its ability to improve product performance, enhance skin and hair feel, and provide a protective barrier.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Cetyl PEG/PPG-10/1-Dimethicone

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Reference

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Synthetic Antioxidant

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Paraben

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Phalate

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Known Skin Sensitizer

Reference

European Union

Warning

Possible Phalate

Cetyl PEG/PPG-10/1-Dimethicone is a silicone-based polymer commonly used in cosmetic formulations. It is a versatile ingredient that serves multiple functions, including as an emulsifier, surfactant, and skin-conditioning agent. In simple terms, it helps to mix oil and water-based ingredients together, creating a stable and smooth product. Additionally, it provides a silky, smooth texture to the formulation, making it easier to spread on the skin. It also helps to lock in moisture and improve the overall feel of the product on the skin.Some common use cases for Cetyl PEG/PPG-10/1-Dimethicone in cosmetic formulations include creams, lotions, makeup products, and hair care products. It is particularly useful in products that require a smooth, even application and a luxurious feel on the skin.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Polysilicone-11

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Reference

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Synthetic Antioxidant

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Paraben

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Phalate

Warning

Known Skin Sensitizer

Reference

European Union

Warning

Possible Phalate

Polysilicone-11 is a synthetic silicone polymer commonly used in cosmetic formulations. It is known for its unique properties, such as providing a smooth, silky texture, and enhancing the spreadability of products. It also acts as a film-forming agent, which helps to create a protective barrier on the skin, locking in moisture and improving the overall appearance of the skin.In cosmetic formulations, Polysilicone-11 is often used in products like primers, foundations, and skincare products, as it helps to create a smooth, even surface on the skin, reducing the appearance of fine lines and wrinkles. Additionally, it can help to control oil and shine, making it a popular ingredient in mattifying and oil-control products. Overall, Polysilicone-11 is valued for its ability to improve the texture, performance, and feel of cosmetic products, while also providing skin-enhancing benefits.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Trimethylsiloxysilicate

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Insufficient Data

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Reference

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Synthetic Antioxidant

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Paraben

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Phalate

Warning

Known Skin Sensitizer

Reference

European Union

Warning

Possible Phalate

Trimethylsiloxysilicate is a silicone-based polymer commonly used in cosmetic formulations. It is known for its water-resistant, film-forming, and long-lasting properties. In simple terms, it helps create a protective barrier on the skin or hair, which can improve the wear and longevity of cosmetic products.Some common use cases for Trimethylsiloxysilicate in cosmetic formulations include:1. Makeup products: It is often used in foundations, eyeliners, and mascaras to provide water resistance and improve the staying power of the product. It helps prevent smudging and fading throughout the day.2. Hair care products: In hair care formulations, Trimethylsiloxysilicate can help provide a protective barrier against humidity and environmental factors, reducing frizz and maintaining the hairstyle for a longer period.3. Skin care products: It can be used in sunscreens, moisturizers, and primers to create a water-resistant barrier on the skin, which can help the product stay in place and maintain its effectiveness.Overall, Trimethylsiloxysilicate is a versatile ingredient that can enhance the performance and longevity of various cosmetic products.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Glycerin

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Reference

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Synthetic Antioxidant

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Paraben

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Phalate

Warning

Known Skin Sensitizer

Reference

European Union

Warning

Possible Phalate

Glycerin, also known as glycerol, is a clear, odorless, and viscous liquid commonly used in cosmetic formulations. It is a humectant, which means it attracts and retains moisture in the skin, making it an excellent moisturizing agent. Glycerin helps to maintain skin hydration, improve skin barrier function, and provide a smooth texture to cosmetic products.In cosmetic formulations, glycerin is used in various products such as creams, lotions, serums, cleansers, and masks. It is also used in hair care products to provide hydration and reduce frizz. Additionally, glycerin can be found in makeup products like foundations and primers, where it helps to create a smooth and even application. Overall, glycerin is a versatile and widely used ingredient in the cosmetic industry due to its moisturizing properties and ability to improve product texture.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Phenoxyethanol

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Reference

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Synthetic Antioxidant

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Paraben

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Phalate

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Known Skin Sensitizer

Reference

European Union

Warning

Possible Phalate

Phenoxyethanol is a synthetic preservative commonly used in cosmetic formulations to prevent the growth of bacteria, yeast, and mold. It helps to extend the shelf life of products and maintain their quality. In cosmetics, it is often found in skincare products, makeup, hair care, and fragrances. It is typically used at concentrations of 1% or less, as higher concentrations may cause skin irritation. Phenoxyethanol is considered a safe and effective alternative to parabens, which have been associated with potential health concerns.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Sodium Chloride

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Paraben

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Phalate

Warning

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Reference

European Union

Warning

Possible Phalate

Sodium Chloride, commonly known as table salt, is an inorganic compound with the chemical formula NaCl. In cosmetic formulations, it serves several purposes, including:1. Thickening agent: Sodium Chloride is used to adjust the viscosity or thickness of products like shampoos, body washes, and facial cleansers. By controlling the consistency, it helps the product spread evenly and rinse off easily.2. Preservative: Sodium Chloride can help extend the shelf life of cosmetic products by inhibiting the growth of microorganisms, such as bacteria and fungi.3. Stabilizer: It helps maintain the stability of the formulation by preventing the separation of ingredients, ensuring a uniform texture and appearance.4. Abrasive: In some products like toothpaste and exfoliating scrubs, Sodium Chloride acts as a gentle abrasive, helping to remove dead skin cells and clean the surface of the skin or teeth.5. Binding agent: Sodium Chloride can help bind ingredients together in products like bath salts and bath bombs, ensuring they maintain their shape and structure.Overall, Sodium Chloride is a versatile and cost-effective ingredient used in various cosmetic formulations to improve their performance, stability, and shelf life.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Magnesium Sulfate

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Reference

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Paraben

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Phalate

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Reference

European Union

Warning

Possible Phalate

Magnesium Sulfate, commonly known as Epsom salt, is an inorganic salt containing magnesium, sulfur, and oxygen. In cosmetic formulations, it serves multiple purposes, including:1. Bath salt: Magnesium sulfate is widely used in bath salts to provide a relaxing and soothing experience. It helps to ease muscle tension, reduce stress, and promote relaxation.2. Exfoliant: It can be used as a gentle exfoliant in scrubs and cleansers to remove dead skin cells and improve skin texture.3. Volumizing agent: In hair care products, magnesium sulfate helps to add volume and texture to the hair by removing excess oil and providing a light hold.4. Skin soothing: Magnesium sulfate has anti-inflammatory properties, which can help soothe irritated skin and reduce redness.5. Stabilizer: It can act as a stabilizer in cosmetic formulations, helping to maintain the consistency and viscosity of the product.Overall, magnesium sulfate is a versatile ingredient in cosmetic formulations, offering various benefits for skin and hair care products.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Hydrogen Dimethicone

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Reference

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Synthetic Antioxidant

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Paraben

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Phalate

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Reference

European Union

Warning

Possible Phalate

Hydrogen Dimethicone is a silicone-based polymer that is often used in cosmetic formulations. In its simplest form, it is essentially a variant of dimethicone (a silicone) that has been modified by adding hydrogen.

In terms of its function and use cases, Hydrogen Dimethicone is widely utilized for its emollient and skin-conditioning properties. Here are some key characteristics and uses:

Emollient: It helps soften and smooth the skin. It forms a protective layer on the skin's surface, trapping in moisture and helping to prevent transepidermal water loss (TEWL). This helps keep the skin hydrated and healthy.
Conditioning: It adds a silky, smooth feel to the product and improves the spreadability, making it easier to apply.
Film-forming: By creating a breathable film on the surface of the skin, Hydrogen Dimethicone can help hold other active ingredients on the skin for longer, potentially enhancing their effectiveness.
Antifoaming: It can also act as an antifoaming agent, helping to reduce the foam in formulations.
Water-repellent: Hydrogen Dimethicone can be used to enhance the water-resistance of a formulation. This is especially useful in products like sunscreens, where maintaining effectiveness after sweating or swimming is important.

In cosmetic formulations, you may find Hydrogen Dimethicone in a wide variety of products including but not limited to foundations, creams, lotions, serums, sunscreens, and hair conditioners.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Sodium Dehydroacetate

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Reference

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Paraben

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Phalate

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Reference

European Union

Warning

Possible Phalate

Sodium Dehydroacetate is a sodium salt of dehydroacetic acid, which is a synthetic preservative and antimicrobial agent. In cosmetic formulations, it is used to prevent the growth of bacteria, yeast, and mold, thereby extending the shelf life of the products. It is commonly found in skincare, haircare, and makeup products, such as creams, lotions, shampoos, and foundations. Sodium Dehydroacetate is known for its low toxicity and compatibility with a wide range of cosmetic ingredients, making it a popular choice for preserving cosmetic formulations.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Disteardimonium Hectorite

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Paraben

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Phalate

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Reference

European Union

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Possible Phalate

Disteardimonium Hectorite is a modified clay mineral that functions as a thickening agent, stabilizer, and suspending agent in cosmetic formulations. It is derived from hectorite, a naturally occurring clay mineral, which is treated with stearic acid to improve its compatibility with other ingredients.In cosmetic formulations, Disteardimonium Hectorite is used to create a smooth and creamy texture, enhance the stability of emulsions, and prevent the settling of pigments or particles. It is commonly found in products such as foundations, concealers, eyeshadows, lipsticks, and skincare products like lotions and creams. Additionally, it can help improve the spreadability and overall performance of the product on the skin.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Aluminum Hydroxide

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Reference

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Paraben

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Phalate

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Reference

European Union

Warning

Possible Phalate

Aluminum Hydroxide is an inorganic compound derived from aluminum and hydroxide ions. In cosmetic formulations, it is primarily used as an opacifying agent, giving products a more opaque and visually appealing appearance. It can also function as a skin protectant, pH adjuster, and absorbent, helping to control excess oil and shine on the skin. Commonly found in products like sunscreens, foundations, and deodorants, Aluminum Hydroxide helps to improve the texture, stability, and overall performance of cosmetic formulations.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Benzoic Acid

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Paraben

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Phalate

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Reference

European Union

Warning

Possible Phalate

Benzoic Acid is a naturally occurring organic compound found in various plants and fruits. In cosmetic formulations, it is primarily used as a preservative due to its antimicrobial properties. It helps to prevent the growth of bacteria, yeast, and mold, thereby extending the shelf life of cosmetic products. Benzoic Acid is commonly used in skincare products, hair care products, and makeup. Additionally, it can also function as a pH adjuster, helping to maintain the stability and effectiveness of other ingredients in the formulation.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Dehydroacetic Acid

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Reference

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Paraben

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Phalate

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Reference

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Possible Phalate

Dehydroacetic Acid (DHA) is an organic compound that is commonly used as a preservative in cosmetic formulations. It is a white, crystalline powder with a mild odor and is soluble in water, alcohol, and other solvents.The primary use case of Dehydroacetic Acid in cosmetic formulations is to prevent the growth of microorganisms, such as bacteria, yeast, and mold. This helps to extend the shelf life of the product and maintain its quality, safety, and efficacy. DHA is often used in combination with other preservatives, such as benzyl alcohol, to enhance its antimicrobial properties.Dehydroacetic Acid is suitable for a wide range of cosmetic products, including creams, lotions, serums, shampoos, conditioners, and makeup products. It is generally considered safe and well-tolerated when used at recommended concentrations, typically below 0.6% in cosmetic formulations.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Laureth-12

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Paraben

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Phalate

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Reference

European Union

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Possible Phalate

Laureth-12 is a synthetic compound derived from lauryl alcohol and polyethylene glycol (PEG). It is an emulsifier and solubilizer, which means it helps mix oil and water-based ingredients together, creating a stable and smooth texture in cosmetic formulations. Its use cases in cosmetic formulations include creams, lotions, shampoos, conditioners, and makeup products. It helps to improve the overall texture and consistency of the product, making it easier to apply and spread on the skin or hair. Additionally, Laureth-12 can also help to enhance the performance of other ingredients in the formulation, such as active ingredients or fragrances, by ensuring they are evenly distributed throughout the product.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Propylene Carbonate

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Synthetic Antioxidant

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Paraben

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Phalate

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Reference

European Union

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Possible Phalate

Propylene Carbonate is a clear, odorless, and polar organic solvent derived from propylene glycol. In cosmetic formulations, it serves multiple purposes, including as a solvent, humectant, and viscosity modifier. It is commonly used in hair care products, makeup, skincare, and personal care items.Some of its use cases in cosmetic formulations include:1. Solvent: Propylene Carbonate helps dissolve other ingredients, making it easier to mix and blend various components in a formulation. It is particularly effective in dissolving hard-to-mix ingredients like pigments and powders.2. Humectant: It helps retain moisture in cosmetic products, keeping them from drying out and providing a hydrating effect on the skin or hair.3. Viscosity modifier: Propylene Carbonate can help adjust the thickness and consistency of a product, making it easier to apply and spread evenly.4. Stabilizer: It can help maintain the stability of a formulation, preventing separation or settling of ingredients over time.Overall, Propylene Carbonate is a versatile and useful ingredient in cosmetic formulations, contributing to the effectiveness, stability, and feel of various products.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Ethylhexylglycerin

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Synthetic Antioxidant

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Paraben

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Phalate

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Reference

European Union

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Possible Phalate

Ethylhexylglycerin is a versatile ingredient used in cosmetic formulations. It is a clear, odorless liquid derived from glycerin, which is a natural component of plant oils and animal fats. Ethylhexylglycerin serves multiple purposes in cosmetic products, including:1. Preservative: It helps to prevent the growth of bacteria, yeast, and mold in cosmetic products, thereby extending their shelf life. It is often used as an alternative to parabens, which have been associated with potential health concerns.2. Emollient: Ethylhexylglycerin has moisturizing properties that help to soften and smooth the skin, making it an ideal ingredient in lotions, creams, and other skincare products.3. Deodorizing agent: It can neutralize unpleasant odors, making it a useful addition to deodorants and other personal care products.4. Stabilizer: Ethylhexylglycerin can help to stabilize and improve the texture of cosmetic formulations, ensuring a consistent and pleasant user experience.Overall, ethylhexylglycerin is a valuable ingredient in cosmetic formulations due to its multifunctional properties and its compatibility with a wide range of other ingredients.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Titanium Dioxide

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Paraben

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Phalate

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Reference

European Union

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Possible Phalate

Titanium Dioxide, also known as TiO2, is a naturally occurring mineral used as a coloring agent, opacifier and a physical sunscreen in cosmetic formulations.

Coloring Agent: It's a white pigment, so it's often used in products like foundations, concealers, and other color cosmetics to create the desired shade when mixed with other pigments.

Opacifier: Titanium dioxide is also used to increase the opacity of cosmetic products, reducing the transparency or translucency and giving them a more substantial, solid appearance. This is particularly useful in products like sunscreens, where it can help visually indicate where the product has been applied and if it's been spread evenly.

Physical Sunscreen: Titanium dioxide is a broad spectrum UV filter, which means it protects the skin from both UVA and UVB rays. Unlike chemical sunscreens which absorb UV light and convert it into heat, titanium dioxide is a physical sunscreen that reflects and scatters the UV light, reducing the amount of radiation that reaches the skin. It is often used in products labeled as "mineral" sunscreens.

In its raw form, titanium dioxide can have a whitish cast on the skin. To avoid this, it is sometimes coated with other materials or used in its nano-sized form, though there is some debate around the safety of nano-particles in cosmetics.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

Iron Oxides

Safety

No Warnings

Safety

No Warnings

Safety

Insufficient Data

Safety

Avoid Using

Reference

Cosmetic Ingredient Review

Source

View Study

Warning

Synthetic Antioxidant

Warning

Liquid Plastic

Warning

Chemical Sunscreen

Warning

Paraben

Warning

Phalate

Warning

Known Skin Sensitizer

Reference

European Union

Warning

Possible Phalate

Iron oxides are inorganic compounds derived from iron and oxygen, typically found in nature as minerals. They come in various shades, such as red, yellow, and black, and are widely used as pigments in cosmetic formulations.In cosmetics, iron oxides are primarily used to add color to products like foundations, eyeshadows, blushes, and lipsticks. They are considered safe, non-toxic, and non-irritating, making them suitable for various skin types. Additionally, iron oxides are stable and resistant to light, heat, and moisture, ensuring that the color remains consistent throughout the product's shelf life.Besides providing color, iron oxides can also offer some sun protection, as they can absorb and scatter UV radiation. This property makes them a common ingredient in mineral sunscreens and makeup products with SPF.

Please note: The safety of this ingredient has not been assessed. It is recommended to do your own research before using products containing this ingredient.

No Warnings