Undecylenic Acid
Undecylenic Acid is a cosmetic ingredient used as an antimicrobial, surfactant - emulsifying agent. It is used in 5 products in our dataset. It is regulated in the EU (listed in a Cosmetics Regulation annex). PubMed carries 50 studies of its skin or topical use.
| INCI name | UNDECYLENIC ACID |
| Function | ANTIMICROBIAL, SURFACTANT - EMULSIFYING, FRAGRANCE, PRESERVATIVE |
| CAS number | 112-38-9 |
| EC number | 203-965-8 |
| Prevalence | 5 products (0.01% of dataset) |
| Most used in | Makeup |
| EU status | Restricted (annex ) |
| Scientific studies | 50 on PubMed (skin/cosmetic/topical) |
| Monthly searches | 8,100 |
Used in
Lipsticks 40%Body Washes 20%Hand Soaps 20%Serums 20%
Frequently asked
- What does Undecylenic Acid do in skincare?
- Undecylenic Acid functions as an antimicrobial, surfactant - emulsifying agent in cosmetic formulas.
- Is Undecylenic Acid allowed in cosmetics?
- Yes, but it is regulated in the EU — it appears in a Cosmetics Regulation annex with usage conditions.
- What products contain Undecylenic Acid?
- It is most commonly found in Makeup products, especially lipsticks (40% of its uses).
Manufacturers with experience using Undecylenic Acid
Match with vetted US contract manufacturers that have hands-on experience formulating with this ingredient.