Scarring is the final stage for inflammatory acne. . Flat reddish spots (macules) may be left in place for up to 6 months after acne lesions flatten. Discoloration at the site of a healed acne lesion may persist for up to 18 months. Nodular and cystic acne leave the worst scars appearing as skin indentation or skin overgrowth. Skin products with anti-free radical properties help to heal scars much faster. Bleaching products, containing Hydriquinone and Kojic acid, help to restore the normal color of your skin.