Calcium PCA Excellent Humectant Hydratation Calcium PCA at a glance Key component of skin’s natural moisturizing factor As a skin care ingredient, this mineral electrolyte helps replenish skin’s barrier Works as a humectant to draw and hold moisture in skin’s uppermost layers Deemed safe by the Cosmetic Ingredient Review Expert Panel Calcium PCA description Calcium PCA is the calcium salt of PCA (pyrrolidone carboxylic acid), which is a key component of skin's natural moisturising factor, or NMF. The NMF plays a role in keeping skin's barrier healthy and intact. Calcium plays a critical role in skin, influencing how new cells are formed and how they move from the lower layer (dermis) to the surface (epidermis). Within skin's layers, calcium serves to orchestrate many aspects of maintenance and repair. Topically, calcium PCA helps replenish skin's barrier and works as a humectant to draw and hold moisture in skin's uppermost layers. Related ingredients: Magnesium PCA Potassium PCA PCA