What it is: A visibly brightening and firming serum with 12-hour time-release vitamin C and ferulic acid that target hyperpigmentation and reduce the look of post-acne marks.Skin Type: Normal, Dry, Combination, and Oily Skincare Concerns: Dark Spots, Dullness, and Uneven Skin ToneFormulation: SerumHighlighted Ingredients:- 12-Hour Time-Release Vitamin C: Visibly brightens all day for rapid results.- Ferulic Acid and Vitamin-C-Rich Japanese Plum: Visibly firm and support elasticity while boosting antioxidant protection.- Pro-Glutathione Antioxidant Booster: Targets hyperpigmentation and delivers 13 times more antioxidant power to visibly brighten.What Else You Need to Know: To optimize absorption, Tatcha used a stable, time-release vitamin C that visibly brightens all day. Effective yet kind to skin, The Brightening Serum may be applied morning and night for around-the-clock care for rapid results. Ultra-light and non-sticky, this serum absorbs quickly and layers beautifully under skincare and makeup.Clinical Results: In on a clinical study of 18 panelists:- 100% showed brighter and visibly firmer skin in 1 week- 100% showed improvement in post-acne marks in 1 week- 100% agreed the serum absorbs quickly into skin and is gentle Clean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.