Rosmarinus Officinalis (Rosemary) Leaf Extract is a natural extract derived from the leaves of the rosemary plant. It is widely used in cosmetic formulations due to its various beneficial properties. The extract is rich in antioxidants, anti-inflammatory compounds, and essential oils, which provide numerous benefits for the skin and hair.In cosmetic formulations, Rosemary Leaf Extract is commonly used for the following purposes:1. Antioxidant: It helps protect the skin from environmental stressors, such as pollution and UV radiation, by neutralizing free radicals that can cause premature aging and damage to the skin.2. Anti-inflammatory: The extract has soothing properties that can help reduce redness, irritation, and inflammation, making it suitable for sensitive or acne-prone skin.3. Astringent: Rosemary Leaf Extract can help tighten and tone the skin, reducing the appearance of pores and improving skin texture.4. Antimicrobial: The extract has natural antimicrobial properties that can help prevent the growth of bacteria and fungi, making it useful in formulations for acne-prone skin or products that require preservation.5. Hair care: In hair care products, Rosemary Leaf Extract can help stimulate hair growth, improve scalp health, and add shine to the hair.Overall, Rosmarinus Officinalis (Rosemary) Leaf Extract is a versatile and beneficial ingredient in cosmetic formulations, offering antioxidant, anti-inflammatory, astringent, antimicrobial, and hair care benefits.