Undecylenoyl Phenylalanine ●
TL;DR. This ingredient is a skin-conditioning brightening active used to reduce the look of uneven tone and dark spots. It helps modulate pigment signaling rather than acting as an exfoliant or sunscreen.
What does Undecylenoyl Phenylalanine do in a cosmetic formula?
This ingredient is a skin-conditioning brightening active used to reduce the look of uneven tone and dark spots. It helps modulate pigment signaling rather than acting as an exfoliant or sunscreen.
Is Undecylenoyl Phenylalanine clean?
Clean-beauty frameworks generally treat it as acceptable, with no major restricted-list profile and low reported sensitization at typical use levels. The main caveat is that it is a specialty synthesized active, so documentation on impurities and supplier quality matters.
Is Undecylenoyl Phenylalanine sustainable?
This material is commonly made from castor-derived fatty acid chemistry and an amino-acid building block, so it can have partial renewable sourcing. Biodegradability is expected to be better than persistent silicones or fluorinated materials, but public environmental data are limited.
Is Undecylenoyl Phenylalanine COSMOS-approved?
It may be permitted in COSMOS-natural formulations when the supplier documents natural-origin feedstocks and allowed processing chemistry, but it is not typically counted as organic content. From a Green Chemistry lens, its stronger points are renewable inputs and low-dose use, while its weaker point is multi-step synthesis.
How does Undecylenoyl Phenylalanine work chemically?
The molecule is an N-acylated amino-acid derivative with a lipophilic chain and a polar carboxyl group, giving it amphiphilic behavior and limited direct water solubility. Typical cosmetic use is about 0.5% to 2%, often pre-dissolved or supported with glycols, alcohols, or suitable solubilizing systems, and it is generally formulated around skin-friendly pH ranges.
Last updated 2026-05-16