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Tetrapeptide-30 is a skin-brightening peptide consisting of four amino acids. It can act as a tyrosinase inhibitor, lightening hyperpigmentation and evening out skin tone by reducing the amount of tyrosinase and inhibiting melanocyte activation.

Tetrapeptide-30 is a skin-brightening peptide consisting of four amino acids. Tetrapeptide-30 can act as a tyrosinase inhibitor, lightening hyperpigmentation and evening out skin tone by reducing the amount of tyrosinase and inhibiting melanocyte activation[1].

Light skin freckle, reduce melanin overproduction, reduce melanin deposition, can be added to skin care products, such as skin cream, skin foundation, powder, freckle cream (sunburn, freckles).

[1] Alessandra Marini, et al. Modulation of skin pigmentation by the tetrapeptide PKEK: in vitro and in vivo evidence for skin whitening effects. Exp Dermatol. 2012 Feb;21(2):140-6. DOI:10.1111/j.1600-0625.2011.01415.x
[2] Reinhard H H Neubert, et al. Dermal peptide delivery using enhancer moleculs and colloidal carrier systems. Part II: Tetrapeptide PKEK. Eur J Pharm Biopharm. 2018 Mar;124:28-33. DOI:10.1016/j.ejpb.2017.12.004