Hydroxyphenoxy Propionic Acid
Hydroxyphenoxy Propionic Acid
HYD
4/10
Concern level
Moderate concern
A synthetic skin-conditioning acid identified as (R)-2-(4-hydroxyphenoxy)propionic acid. Cosmetic databases list it as a skin-conditioning ingredient, while chemical references show an eye-damage hazard classification for the pure substance. ([incibeauty.com](https://incibeauty.com/en/ingredients/4298-hydroxyphenoxy-propionic-acid?utm_source=openai))
Pore-clogging
Non-comedogenic
Regulatory
No data
Chemical Properties
Molecular Weight
182.17 g/molTypical Concentration
0.01% - 0.20%CAS Number: 94050-90-5
Skin Type Compatibility
dry skin4/10
oily skin5/10
sensitive skin2/10
acne prone4/10
mature skin5/10
normal skin5/10
Interactions
incompatible with: Avoid combining with eye-area products or formulas intended for mucosal exposure, Use caution with other low-pH or irritating actives if the formula is already sensitizing
Risks & Warnings
The neat substance is classified as causing serious eye damage and may irritate skin and respiratory passages; leave-on products near the eye area require extra caution. ([pubchem.ncbi.nlm.nih.gov](https://pubchem.ncbi.nlm.nih.gov/compound/179741?utm_source=openai))
Vegan Cruelty-Free
