Obagi Clinical Vitamin C + Arbutin Brightening Serum Size: 1 fl.oz/ 30 ml Brand new in box and sealed. Retail value of $92+ Brighten and smooth the appearance of discoloration and uneven skin texture with Vitamin C + Arbutin Brightening Serum. Scientifically-formulated and proven effective to help reduce the appearance of skin discoloration and uneven skin texture. Noticeable results within as little as 24 hours and with continued use, reveal a more youthful and radiant complexion.