This contains pure vitamin C (little amount), Vitamin C derivative, Brightening/Wrinkle improving ingredients (peptides + collagen). The PH is 5.2. It's highly effective on me and improved my acne scars fast. It immediately brightened my skin. and is ideal for vitamin C beginners. It also contains arbutin, tranexamic acid, bifida ferment lysate, peptides, ceramides, HA and panthenol. This is a repurchase and will repurchase again and again.