Azelaic Acid, Potassium Azeloyl Diglycinate, Hexylresorcinol, and Alpha-Arbutin. Azelaic Acid helps reduce melanin production, decrease bacteria growth in the follicle, and normalize skin keratinization. Potassium Azeloyl Diglycinate, an azelaic acid derivative, inhibits melanin synthesis, reduces sebum secretion, and hydrates the skin. Hexylresorcinol, an innovative skin-lightening agent, reduces melanin synthesis by acting at multiple levels of the melanogenesis pathway. Alpha-Arbutin, one of the most potent tyrosinase inhibitors, reduces the production of melanin, lightening dark spots effectively. Additional ingredients include Water (Aqua), Propylene Glycol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Polysorbate 20, Sodium Benzoate, Xanthan Gum, Sodium Hydroxide, Tetrasodium EDTA, Polysorbate 60, and Sorbitan Isostearate.