Also known as Sodium pyrrolidone carboxylate, Sodium pyroglutamate
A water-binding humectant used to support a hydrated, comfortable skin feel.
Humectant & skin conditioner
What it is
Sodium PCA is the sodium salt of pyrrolidone carboxylic acid. The name identifies a cosmetic ingredient rather than an exfoliating-acid treatment. Cosmetic raw materials may have plant or synthetic origins; an INCI name alone does not establish a finished product's sourcing or certification.
Common uses and benefits
It is used as a humectant and skin conditioner in cosmetic formulas. Its water-binding role can support a softer, more hydrated feel. In hair care, it can also serve conditioning and antistatic functions. Results depend on concentration and the surrounding formula.
Who may like it
It may appeal to people seeking lightweight hydration in a body lotion, facial moisturizer or serum. The complete formula, including any fragrance or other ingredients, determines whether a product suits a particular person.
Common formats
Sodium PCA
Hydrating body lotions
Facial moisturizers and serums
Conditioning hair products
Pairing and use notes
Often included alongside other humectants such as glycerin and within formulas containing aloe or emollients. Follow the finished product's directions; the presence of Sodium PCA does not establish how much product to apply or how long hydration will last.
Good to know
Do not infer that a complete formula is fragrance-free, hypoallergenic or suitable for every skin type from this ingredient alone. Stop using a finished product if it causes persistent discomfort. This ingredient guide does not establish a treatment claim for any linked product.
