Sodium Polyacrylate Starch
Reviewed by Daisy · Last updated 18 Aug 2026
Also known as: Polymer
Mixture of a natural starch and a synthetic acrylate polymer | Functions as a texture enhancer, thickening agent, stabiliser, and absorbent
Addresses
EWG Safety Score
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What Is Sodium Polyacrylate Starch?
Sodium polyacrylate starch is a mixture of a natural starch combined with a synthetic acrylate polymer. As with most starches, it works in cosmetics as a texture enhancer, thickening agent, stabilizer, and absorbent, the latter benefit occurring when higher amounts are used.
Sodium polyacrylate starch is considered safe as used in cosmetics; its size does not allow penetration past skin’s surface. In its raw form, it is a white powder.
Clinical Evidence & References
Published Research
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https://cosmeticsinfo.org/ingredient/sodium-polyacrylate [https://cosmeticsinfo.org/ingredient/sodium-polyacrylate]
From the Clinic
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Sodium Dextran Sulfate
Suspending agent | Ruled safe as used in makeup and skin care
Sodium Hydroxypropyl Starch Phosphate
A modified starch that gently exfoliates and thickens formulations
Sodium Magnesium Silicate
A mineral silicate that thickens and stabilises formulations
Sodium Polyacryloyldimethyl Taurate
A synthetic polymer that stabilises emulsions and controls texture in skincare formulas
Sodium Propoxyhydroxypropyl Thiosulfate Silica
A silica-based conditioning agent that helps refine skin texture and support cleansing formulations
Sodium Sarcosinate
A mild surfactant derived from sarcosine, commonly used in cleansers and hair products
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