Humectant

Arginine Pca

Reviewed by Emma · Last updated 18 Aug 2026

Humectant ingredient

What Is Arginine Pca?

Arginine Pca is a cosmetic ingredient. It is grouped in the Humectant category on this site.

There is limited independent published research on its topical use, so this entry describes what the ingredient is rather than making specific performance claims.

How widely it's used

0.1%
of skincare products contain this ingredient — placing it in the top 50% of most-used ingredients.
Most common in: Treatments Moisturisers

Regulatory information

Standardised cosmetic-ingredient identifiers used by regulators.

Show identifiers
INCI Name
ARGININE PCA
EC Number
260-081-5 / 265-253-3
Function
Humectant, Skin Conditioning

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