Phosphatidylinositol
molecular structure · PubChem
AKA: Inositol phospholipid
Synthetic
Antioxidant
Cleanser
Emulsifier
Skin Conditioner
Barrier Lipid
Not Clean
Phosphatidylinositol is a cosmetic ingredient used as antioxidant, skin conditioning, surfactant - emulsifying. Assessed as safe by the CIR.
CAS #
-
Form
Powder
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Locks in moisture
Neutralizes free radicals
Traditional Use
A naturally occurring phospholipid found in cell membranes with limited traditional use. Used in modern skincare formulations as a hydrating and skin-conditioning agent.
Skin Types
●all-skin-types
Best For
Dehydration
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR