Sodium PCA

Sodium PCA

AKA “Sodium L-pyroglutamate, 28874-51-3, Sodium pyroglutamate, Sodium pidolate, L-Proline, 5-oxo-, monosodium salt, L-5-Oxoproline monosodium salt, Sodium pyrrolidone-5-carboxylate, 5-Oxo-L-proline monosodium salt, Sodium L-pyrrolidonecarboxylate, EINECS 249-277-1”

Humectant

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Ingredient Facts

Sodium pca

AKA: Sodium L-pyroglutamate, 28874-51-3, Sodium pyroglutamate, Sodium pidolate, L-Proline, 5-oxo-, Monosodium salt, L-5-Oxoproline monosodium salt, Sodium pyrrolidone-5-carboxylate, 5-Oxo-L-proline monosodium salt, Sodium L-pyrrolidonecarboxylate, EINECS 249-277-1

Humectant · Humectant · EWG: 1

Synthetic

Humectant

Skin Conditioner

Hair Care

Amino Acid

Clean

Sodium 5-oxo-2-pyrrolidinecarboxylate

Effective at 25.0%

Formula

C5H6NNaO3

Mol. Weight

151.10

CAS #

28874-51-3

Form

Liquid

See origin →

Functions

Antistatic

Hair Conditioning

A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.

Humectant

A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.

Skin Conditioning

A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.

Locks In Moisture

Traditional Use

Sodium PCA is the salt form of pyrrolidone carboxylic acid, a natural humectant found in human skin. Identified in the 1970s as a key component of the skin's natural moisture factor and incorporated into moisturizers to mimic skin's natural hydration mechanism.