isobutylene/styrene copolymer

Ingredient type:  EMULSIFIER/TEXTURE

✨ Role: Used primarily as a film-forming agent and thickener, isobutylene/styrene copolymer helps form a uniform layer on the skin, increasing the durability of cosmetic products and improving their water resistance.

Ingredient type: Polymer

‍⚕️ Safety: Considered safe for cosmetic use. Does not penetrate the skin and remains on the surface.

✨ Vegan: Yes, this ingredient is synthetic and therefore suitable for vegan formulations.

✨ Note: Well tolerated by most skin types, but like any polymer, it may be comedogenic for some people. It should not be ingested or used on damaged skin.

Found in: Frequently used in long-lasting makeup products, waterproof mascaras, nail polish, and some sunscreens.

Comedogenic rating: 

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