Lauryl PCA is a compound based on L-pyrrolidonecarboxylic acid (L-PCA), a natural component of the skin's Natural Moisturizing Factor. It helps maintain the hydrolipid film, the skin's natural protective layer. This improves moisture retention, making the skin feel immediately more comfortable and giving it a more vibrant appearance. The gradual release of L-PCA supports the skin's natural moisture level and contributes to a long-lasting hydrating effect that lasts up to 24 hours.