Pentaerythrityl Tetraisostearate
A medium-weight emollient ester. It softens skin and stabilizes product texture. Well tolerated.
Evidence by route
Topical application
A functional emollient. Safe.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
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.
Frequently asked questions
Is Pentaerythrityl Tetraisostearate safe during pregnancy?
Pentaerythrityl Tetraisostearate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Pentaerythrityl Tetraisostearate for?
Pentaerythrityl Tetraisostearate suits: normal, dry, combination, oily, sensitive.
What is Pentaerythrityl Tetraisostearate and what does it do in cosmetics?
A medium-weight emollient ester.
Is Pentaerythrityl Tetraisostearate comedogenic?
On the Fulton scale 1/5 – very low comedogenicity. For acne-prone skin, a rating of 3 or higher suggests choosing an alternative.
What's the INCI name for Pentaerythrityl Tetraisostearate?
The INCI name is Pentaerythrityl Tetraisostearate.
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