murphyPolylactic Acid
molecular structure · PubChem
Plant-Derived Synthetic
Acid
Clean
OriginDerived from lactic acid, which is produced through bacterial fermentation of plant-based sugars or synthesized chemically. Polymerized through condensation reactions to form long-chain polylactic acid polymer molecules.
Polymer of lactic acid
CAS #
9051-89-2
Form
Liquid
Skin Types
●all-skin-types, gentle
Best For
Uneven Texture
Pregnancy & Breastfeeding Safe
Yes
Functions
Abrasive
Supports cell turnover
Draws water to skin
Smooths skin texture
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Skin Irritant
2 studies / 2 not irritating (CIR 846)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 846)
Concentration Guide
Leave-on0.084%
Rinse-off3.5–5%
0%50%100%
CIR reported use · report published 2026
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR