Isotridecyl Isononanoate
An emollient ester. It softens skin and gives a light slip without a greasy film. 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
Isotridecyl isononanoate (INCI: Isotridecyl Isononanoate) is a synthetic emollient ester. Its job in a formula is clearly functional: it gives light slip, softens the skin and leaves a silky finish with no greasy film. It also works as a carrier for dispersing pigments and oil-soluble actives. It is not a skincare active but a texture ingredient. It does not treat wrinkles, pigmentation or inflammation; it improves how the product feels and spreads. In that role it performs reliably. Given its emollient nature and lack of meaningful systemic absorption, it can be used during pregnancy and breastfeeding. Tolerance is high, with low irritation and allergy potential. Comedogenicity is very low (1 of 5), so very oily or acne-prone skin may want to judge it within the whole formula, though individual risk is small.
Frequently asked questions
Is Isotridecyl Isononanoate safe during pregnancy?
Isotridecyl Isononanoate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Isotridecyl Isononanoate for?
Isotridecyl Isononanoate suits: normal, dry, combination, oily, sensitive.
What is Isotridecyl Isononanoate and what does it do in cosmetics?
An emollient ester.
Is Isotridecyl Isononanoate 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 Isotridecyl Isononanoate?
The INCI name is Isotridecyl Isononanoate.
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