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.

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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

Texture

RiskVery low 0 / 4

Rated by SpottyLabs' ingredient methodology, independent of brands.

What it helps with

Intense hydration
Moisture retention
Improves skin texture

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Products with Sodium Polyaspartate

Moisture Surge 100H Auto‑Replenishing Hydrator (Aloe Bioferment + HA)

Score 4.5 / 5

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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.