Sodium Polyaspartate

Sodium Polyaspartate is the sodium salt of polyaspartic acid, a biodegradable, water-soluble polyanion used in personal care. It's included to bind moisture, improve spreadability, and improve suppleness without a heavy or sticky feel.
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Ingredient Snapshot

Overview
A lightweight polymer that binds moisture without feeling sticky.
Category
Hydration, Skin Conditioning
Type
Humectant

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

It provides lightweight hydration that leaves skin feeling comfortably plump and soft, reducing the sensation of dryness for a smoother look and feel.

Uses In Skincare & Cosmetics

It's common in hydrating serums, toners, sheet masks, and daily moisturizers to boost water content without heaviness.

Comedogenic Rating

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

Safety

It's generally well tolerated with low likelihood of irritation; patch test if very sensitive. No widely recognized regulatory limitations apply.

Is Sodium Polyaspartate a Good Ingredient?

It rates Good as an effective water-binding humectant that improves slip and softness with a light finish. Direct clinical data on skin outcomes are limited versus marquee humectants like hyaluronic acid, though it performs reliably in formulas.

Products with Sodium Polyaspartate

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