Sodium PCA is the salt of pyrrolidone carbonic acid, a naturally occurring humectant commonly found in moisturizing skin care products. This nourishing and hydrating ingredient helps plump the look of skin with moisture while leaving it feeling soft and smooth.
Peter Thomas Roth products with Sodium PCA:
Potent-C Brightening Vitamin C Moisturizer
Water Drench® Hyaluronic Cloud Cream