Tridecyl Trimellitate
A rich emollient ester. It softens skin, adds shine and holds pigments, common in makeup. 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
Tridecyl Trimellitate is a heavy fatty ester that works as an emollient. It softens skin, adds shine and helps fix and disperse pigments, so it is common in makeup such as foundations, lipsticks and eyeshadows. This is a functional texture and color ingredient, not a skincare active. It gives a rich finish and improves pigment performance, but does not treat skin or offer its own biological benefit. Applied topically it has no systemic relevance, so it can be used during pregnancy and breastfeeding. Irritation and allergy are unlikely, so it is generally well tolerated. One detail is worth noting: with a comedogenicity rating of 2, on oily or acne-prone skin it can encourage clogged pores, especially in dense, covering formulas.
Frequently asked questions
Is Tridecyl Trimellitate safe during pregnancy?
Tridecyl Trimellitate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Tridecyl Trimellitate for?
Tridecyl Trimellitate suits: normal, dry, combination, oily, sensitive.
What is Tridecyl Trimellitate and what does it do in cosmetics?
A rich emollient ester.
Is Tridecyl Trimellitate comedogenic?
On the Fulton scale 2/5 – low comedogenicity. For acne-prone skin, a rating of 3 or higher suggests choosing an alternative.
What's the INCI name for Tridecyl Trimellitate?
The INCI name is Tridecyl Trimellitate.
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