Sodium Palmitoyl Proline
Sodium Palmitoyl Proline is the sodium salt of the N-palmitoyl derivative of the amino acid L-proline, registered under CAS # 58725-33-0 and EC # 261-406-3. Its IUPAC name is L-Proline, 1-(1-Oxohexadecyl)-, Sodium Salt, indicating a fatty acid (palmitic acid, C16) conjugated to the cyclic amino acid proline. According to CosIng, its officially recognized function is skin conditioning. It appears across a wide range of product types including serums, moisturizers, masks, and toners.
As a skin conditioning agent, Sodium Palmitoyl Proline is used to improve the feel and appearance of skin. Its presence in products targeting redness, soothing, brightening, and anti-aging suggests a broad conditioning role, though the source does not provide specific clinical benefit claims beyond skin conditioning.
