Sodium PCA is a humectant that occurs naturally in the human skin. It is highly water-absorbent, holding several times its weight in water. It is well known for being a stronger hydration agent and skin-penetration booster than traditional compounds like propylene glycol or glycerin.
Its value comes from its function as a humectant, meaning it helps skin’s upper layers both draw in and retain moisture, resulting in a more supple, youthful appearance. Because of these abilities it’s a staple ingredient in many moisturizers, where it provides hydration without being thick or occlusive. It’s considered safe and non-irritating as used in skin and hair care products. It can be used in the formulation of gels, creams, lotions, shampoos, conditioners and foundations.
