What it is: A gel with a concentrated cocktail of potent ingredients to target factors that lead to brown patches for radiant, even-toned skin. What it does: This highly-specialized anti-aging treatment works in three ways to promote the appearance of skin. Hydroquinone, the gold-standard skin-lightening ingredient, fades dark spots and discolorations; salicylic acid exfoliates to smooth bumpy skin textures; and antioxidants help nurture skin for