Brown Spot Gel with Glycolic Acid lightens skin dark spots and evens skin tone with a deeply absorbing formulation containing hydroquinone and glycolic acid. Fade Dark Spots. F-A-S-T-E-R. Now… glycolic acid combined with hydroquinone. New Double-Action Brown Spot Skin-Lightening Night Gel. The more you know about skin care the more you'll appreciate… Reviva Labs Inc. Now in addition to the special blending of hydroquinone in a natural base we've added advanced glycolic acid for twin-action in lightening skin's dark spots or uneven skin tone. Glycolic helps the lightening ingredient (hydroquinone) to be absorbed deeper as well as helping lighten spots by itself. All in a natural base with added ingredients to help avoid sensitivity.Other products from HerbsPro