PCA Dimethicone Bon Émollient Hydratation PCA Dimethicone at a glance Stable siloxane polymer Created through the combination of dimethicone and pyrrolidone carboxylic acid Helps skin hydration through the reduction of transepidermal water loss Gives cosmetic formulas an elegant, silky feel PCA Dimethicone description PCA dimethicone is a synthetic emollient skin care ingredient created by combining dimethicone and pyrrolidone carboxylic acid, an amino acid-derived ingredient that’s part of skin’s natural moisturizing factor. It’s used in products for its hydrating benefits as well as its ability to impart a silky, smooth feel when applied to skin. This siloxane polymer’s an emollient ingredient, meaning that it helps boost skin’s hydration by creating a layer over skin to reduce transepidermal water loss and help ensure a supple feel. According to suppliers, PCA dimethicone is most commonly used in leave-on moisturizing products, like moisturizers, in concentrations between 0.25%-10.0%. It does not present safety or sensitization concerns for skin. Related ingredients: Dimethicone Carboxylic Acid