Sodium PCA primarily functions as a humectant moisturiser in the skin.
It is a natural component of the skin’s natural moisturizing factor (NMF) and when applied topically, it is able to mimic the NMF. Humectants attract and retain moisture from the air via absorption, drawing water vapour into or beneath the surface. As a humectant, Sodium PCA helps to keep the skin hydrated. Together with the naturally-occurring lipids in the skin, NMF components work to keep skin’s surface intact, supple, and hydrated.
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