A polymer thickener and film former. It structures the oil phase and holds pigments and SPF filters evenly. Inert to skin.
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
A functional thickener and film former. Safe.
Hydrogenated Styrene/Butadiene Copolymer (INCI same) is a thickening and film-forming polymer. It structures the oil phase and keeps pigments and sunscreen filters evenly distributed. It appears in sticks, makeup and sun care. On efficacy: this is a functional texture and structure ingredient, not a skincare active. It does not treat skin. Its value is in giving the formula body and helping color and SPF spread evenly, which is useful in long-wear products. It is topical, with no meaningful systemic absorption. It can be used during pregnancy and breastfeeding. Tolerance is high: low irritation and allergy potential, suitable for sensitive skin. It is an inert polymer that does not clog pores under normal conditions.
Irritation potential
LowAllergen risk
LowPregnancy
SafeSuitable for
The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
Hydrogenated Styrene/Butadiene Copolymer is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
Hydrogenated Styrene/Butadiene Copolymer suits: normal, dry, combination, oily, sensitive.
A polymer thickener and film former.
The INCI name is Hydrogenated Styrene/Butadiene Copolymer. It may also appear as: Гидрогенизированный стирол бутадиен сополимер.
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