Starch Acetate
AKA “Acetylated Starch
Synthetic
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Ingredient Facts
Starch acetate
AKA: Acetylated Starch
Synthetic · Hair Conditioning | Skin Conditioning - Emollient · EWG: 4
Plant-Derived
Emollient
Skin Conditioner
Hair Care
Synthetic
Clean
Starch Acetate is the product obtained by the reaction of acetic acid and starch Science: Functions: Hair Conditioning, Skin Conditioning, Skin Conditioning - Emollient Safety Ratings: CIR: Safe as used
Form
Powder
Plant-Derived
Botanical-Derived Synthetic. Derived from plant starches, commonly sourced from corn, potato, or tapioca plants. Produced through acetylation, where acetic acid chemically modifies starch molecules to improve conditioning properties.
Function
Hair Conditioning | Skin Conditioning - Emollient
Benefits
Locks In Moisture
Traditional Use
Modern derivative of starch created through acetylation. Developed in the 20th century as a thickening and absorbent agent for cosmetics, building on the historical use of various starches in traditional body powders and foundation products.
Skin Types
all-skin-types
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Not a Sensitizer
Concentration Guide
Dermal absorption: 2%. Source: CIR Safety Assessment (CIR Seq 680).
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR