Characteristics
- INCI
- Trideceth-9
- CAS
-
24938-91-8, 69011-36-5
This is the substance number in the Chemical Abstracts Service registry. The CAS number uniquely identifies a substance regardless of language, trade name, or synonyms.
- EC
-
500-241-6
This is the substance number in the European chemical identification system (EC number), used in European regulatory databases including ECHA/CosIng.
- Functions
- emulsifying, surfactant
Description
Trideceth-9 is a synthetic ingredient from the “ethoxylated alcohol” family, used mostly as a surfactant and solubilizer in cosmetics. In simple terms, it helps oil and water mix, which makes formulas more stable and easier to spread. You’ll often find it in cleansers, shampoos, body washes, and some leave-on products where it supports a smooth, even texture and helps other ingredients disperse properly.
For skin and hair, Trideceth-9 doesn’t act like a treatment ingredient on its own, but it can improve the feel and performance of a formula. In shampoos and cleansers, it helps lift away oil and residue; in lotions or serums, it can help keep fragrance, oils, or active ingredients evenly blended. People who like lightweight, well-rinsing products may benefit most from formulas that use it.
Caveat: as with many surfactants, it may be a bit drying or irritating in some formulas, especially for very sensitive skin or if used in high amounts. Its impact depends a lot on the overall product, not just the ingredient itself.
Found in products (667 total)
Наиболее часто встречается в продукции Nivea (53 продуктов)