Undecylenoyl Phenylalanine is a highly effective skin-brightening active ingredient widely used in cosmetic formulations targeting hyperpigmentation and uneven skin tone. By inhibiting tyrosinase activity, it helps regulate melanin production, resulting in a more balanced, luminous, and even complexion.

This ingredient is supplied in powder form and is soluble in oil, making it suitable for emulsions, serums, and other oil-based cosmetic applications. With a recommended usage level of ≤0.5%, it provides powerful efficacy at a low dosage, supporting both performance and formulation stability.