Solanum tuberosum (Potato) starch
AKA: Potato Starch
Plant-Derived Synthetic
Clean
Solanum Tuberosum (Potato) Starch is a cosmetic ingredient used as absorbent, binding, bulking. Rated low hazard by EWG. Assessed as safe by the CIR.
CAS #
9005-25-8
Form
Powder
Functions
Absorbent
Binding
Bulking
Viscosity Controlling
Absorbs Excess Oil
Holds Formula Together
Adds Body & Volume
Controls Viscosity
Anti-Aging Benefits
Antioxidant Protection
Reduces Inflammation
Holds ingredients together
Adds volume
Controls product thickness
Traditional Use
Potato starch has been used traditionally in folk remedies and skincare across European and Asian cultures as a soothing and absorbent powder. It was historically used to prevent diaper rash and soothe irritated skin before modern cosmetic chemistry.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
Dermal absorption: 2%. Source: CIR Safety Assessment (CIR Seq 680).
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: Kew POWO · CosIng · EWG · CIR