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.

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