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Sodium Polyaspartate

Sodium Polyaspartate is a synthetic polymer known for its excellent water-binding capabilities. In skincare, it acts as a humectant, drawing moisture from the environment into the skin to enhance hydration. It can also help improve the texture and feel of cosmetic formulations.

NonePolymerVeganEvidence: Medium
BenefitGood 2.8 / 4
Hydration i3.2 / 4

Whether the ingredient helps increase the skin’s water content — humectants that attract water, ingredients that reduce water loss, or ones that make skin feel less dry.

Texture i1 / 4

Whether it can improve smoothness and surface texture — roughness, flaking, clogged pores, or unevenness. Exfoliating acids, retinoids, and smoothing moisturizers may score here.

RiskVery low 0 / 4

Rated by SpottyLabs' ingredient methodology, independent of brands.

What it helps with

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Products with Sodium Polyaspartate

Crystal Retinal 3
Medik8
Crystal Retinal 3
4.4/ 516/23/7

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Frequently asked questions

What is Sodium Polyaspartate?
Sodium Polyaspartate is a synthetic polymer that is highly effective at attracting and holding onto water molecules.
How does Sodium Polyaspartate benefit the skin?
It functions as a powerful humectant, helping to keep the skin hydrated by drawing moisture from the air and reducing transepidermal water loss.