Sodium Polyacrylate Starch

Sodium Polyacrylate Starch is a crosslinked starch-polyacrylate polymer used in cosmetics as an absorbent and rheology modifier. It reduces surface shine, boosts slip, and aids stability by thickening and keeping oily phases uniformly dispersed.
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Ingredient Snapshot

Overview
A starch-based powder that soaks up oil for a lasting matte look.
Category
Oil Control, Tone/Texture
Type
Rheology Modifier

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

It creates a lasting matte finish and reduces the look of greasiness while maintaining a soft-touch feel, and can extend makeup wear by curbing midday shine and slippage.

Uses In Skincare & Cosmetics

It's found in mattifying primers, oil-control moisturizers, setting powders, and shine-reducing sunscreens to deliver a smoother, polished appearance.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

It's generally low irritation in leave-on and rinse-off products. Those prone to dryness may notice tightness if layered across multiple matte formulas or used at higher levels. No widely noted regulatory restrictions apply.

Is Sodium Polyacrylate Starch a Good Ingredient?

It rates Good as a dependable oil-absorbing and thickening polymer that reduces shine and improves slip with strong emulsion stability. The evidence focuses on formulation performance rather than direct skin outcomes, and heavy use may feel drying for some, which caps it below Great.

Products with Sodium Polyacrylate Starch

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