Cyclodextrin is a naturally occurring, water-soluble, ring-shaped molecule made up of glucose units. It is derived from starch and has a unique structure that allows it to form inclusion complexes with various molecules, including lipophilic (oil-loving) substances.In cosmetic formulations, cyclodextrin has several use cases:1. Encapsulation: Cyclodextrin can encapsulate and stabilize volatile, sensitive, or poorly soluble ingredients, such as fragrances, essential oils, and vitamins. This encapsulation helps to protect these ingredients from degradation, prolong their shelf life, and improve their solubility in water-based formulations.2. Controlled release: Due to its ability to form inclusion complexes, cyclodextrin can provide controlled release of encapsulated ingredients. This can help to prolong the effectiveness of a product, enhance its sensory properties, and reduce potential irritation.3. Odor control: Cyclodextrin can effectively trap and neutralize unpleasant odors by forming inclusion complexes with odor-causing molecules. This property is particularly useful in deodorants, hair care products, and other personal care items.4. Solubilization: Cyclodextrin can improve the solubility of lipophilic ingredients in water-based formulations, making it easier to incorporate them into various cosmetic products.5. Emulsion stabilization: Cyclodextrin can help to stabilize oil-in-water emulsions by reducing the interfacial tension between oil and water phases, thus improving the overall stability and texture of the product.Overall, cyclodextrin is a versatile and valuable ingredient in cosmetic formulations, offering multiple benefits such as encapsulation, controlled release, odor control, solubilization, and emulsion stabilization.