A medium-weight emollient ester. It softens skin and stabilizes product texture. Well tolerated.
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
A functional emollient. Safe.
Pentaerythrityl Tetraisostearate is a medium-density fatty ester that acts as an emollient. It softens skin, gives a pleasant feel and helps stabilize the texture of the product, so it appears in creams, balms and makeup. This is a functional texture ingredient, not a skincare active. It improves the feel and cohesion of the formula and leaves skin soft, but it does not treat skin or provide its own biological benefit. Its role is sensory and structural. Applied topically it has no systemic relevance, so it can be used during pregnancy and breastfeeding. Tolerance is good. Irritation and allergy potential are low, so it suits sensitive skin. Its comedogenicity rating is only 1, very low, so the risk of clogging pores is minimal even on combination 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.
Pentaerythrityl Tetraisostearate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
Pentaerythrityl Tetraisostearate suits: normal, dry, combination, oily, sensitive.
A medium-weight emollient ester.
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 Pentaerythrityl Tetraisostearate. It may also appear as: Пентаэритритил тетраизостеарат.
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