Hydroxypropyldimethicone

1. Definition Hydroxypropyldimethicone:

Hydroxypropyldimethicone is a silicone-based polymer that is commonly used in cosmetics as a conditioning agent and emollient. It is a modified form of dimethicone, which is a type of silicone oil.

2. Use:

Hydroxypropyldimethicone is primarily used in hair care products such as shampoos, conditioners, and styling products. It helps to improve the texture and feel of the hair by providing conditioning and smoothing benefits. It also helps to reduce frizz, enhance shine, and protect the hair from heat damage.

3. Usage Hydroxypropyldimethicone:

Hydroxypropyldimethicone is typically found in small concentrations in cosmetic formulations, ranging from 0.5% to 5%. It is safe for use in cosmetics and has been approved by regulatory agencies such as the FDA and the European Union for use in personal care products. However, as with any cosmetic ingredient, it is important to perform a patch test before using a product containing hydroxypropyldimethicone to check for any potential allergic reactions.

4. References:

- "Safety Assessment of Dimethicone and Related Silicones as Used in Cosmetics" by the Cosmetic Ingredient Review Expert Panel (2015)

- "Silicones for Personal Care" by Ralph G. Nuzzo and Paul C. Hiemenz (2008)

- "Handbook of Cosmetic Science and Technology" edited by André O. Barel, Marc Paye, and Howard I. Maibach (2014)