Snapshot
- Overview
- A starch-based powder that soaks up oil for a lasting matte look.
- Category
- Oil Control, Tone/Texture
- Type
- Rheology Modifier
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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Our take
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.
What it does
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.
Where you'll find it
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.
Before you use it
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.
Products with Sodium Polyacrylate Starch
