Undecylenoyl phenylalanine

Undecylenoyl phenylalanine (CAS 175357-18-3), commercially recognized as Sepiwhite MSH, is a lipophilic amino acid derivative used in cosmetic formulations as a skin-brightening active. It works by interfering with melanin synthesis pathways.

This makes it a targeted ingredient for pigmentation correction in topical products. Skin-lightening and dark spot correction creams rely on this ingredient to reduce uneven pigmentation without the use of hydroquinone.

It is positioned as a compliant alternative in regulated markets. It is incorporated into facial serums, sunscreen formulations, and anti-aging emulsions where tone-evening performance is a primary claim for the consumer.

Formulators targeting hyperpigmentation from UV exposure or post-inflammatory sources use it alongside other actives such as niacinamide or vitamin C. This allows for the creation of multi-mechanism brightening systems.

Its lipophilic profile supports stable incorporation into oil-in-water and anhydrous emulsion systems. This is a practical consideration during formulation development for chemists working with complex cosmetic bases.

Undecylenoyl phenylalanine is supplied as a white to off-white powder. It is available in cosmetic-grade specification, with Sepiwhite MSH and Sepiwhite MSH QD representing distinct commercial grades for the industry.

These grades are differentiated by particle size and dispersibility. Minimum order quantities and packaging formats typically align with cosmetic active ingredient supply standards for global distribution and manufacturing.