A fatty dispersant and emollient. It helps spread mineral filters and pigments evenly and softens texture. Well tolerated.
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
A functional dispersant and emollient. Safe.
Polyhydroxystearic Acid is a derivative of stearic acid with hydroxyl groups. INCI: Polyhydroxystearic Acid. In a formula it works as a dispersant and stabilizer: it evenly spreads and keeps pigment and mineral UV-filter particles suspended, prevents them from clumping, and improves texture and spread. It is a functional component, not a skincare active. It often appears in sunscreens and color cosmetics. Pregnancy safety. Systemic absorption through intact skin is low and there is no evidence of harm. It can be used during pregnancy and lactation. Tolerance. Irritation and allergen potential are low, suitable for sensitive skin.
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.
Polyhydroxystearic Acid is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
Polyhydroxystearic Acid suits: normal, dry, combination, oily, sensitive.
A fatty dispersant and emollient.
On the Fulton scale 1/5 – very low comedogenicity. For acne-prone skin, a rating of 3 or higher suggests choosing an alternative.
The INCI name is Polyhydroxystearic Acid. It may also appear as: Полигидроксистеариновая кислота.
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