Brightening Serum is a hydroquinone-free formula that helps target and minimize the appearance of discoloration with a full spectrum of natural brighteners and smoothing ingredients. Level 1 out of 3 brightening: Hydroquinone-free, natural brightening. Product Features: Ideal for Addressing Uneven Skin Tone and Dark Spots Great for All Skin Types Can be Applied 2-7 Times a Week Helps Reduce the Appearance of Dark Spots Contains Alpha Arbutin, Lactic Acid, and Azelaic Acid Perfect for Day and Night Use A Part of Our Solution for Hyperpigmentation Directions Apply a small amount to target areas or all over skin after cleansing and toning. If needed, follow with your favorite Glo Skin Beauty moisturizer. Can be used morning and evening.