What It Is Our clinical-strength serum visibly improves dark spots. What It Does Even Better Clinical Serum is proven to help reverse the appearance of dark spots and blemish marks. See a visibly brighter complexion. Soothing Optimizer keeps skin calm, helping it better resist future darkening. Both are dispensed from a dual-chamber bottle that separates each serum, preserving the purity and potency of the ingredients until right before application. Key Ingredients / Technology Our patented CL-302 Complex includes Vitamin C to help reduce the appearance of discoloration advanced Brightening Yeast Blend to break up the appearance of dark spots and encapsulated Salicylic Acid and Acetyl Glucosamine to exfoliate skin, speed departure of surface discolorations and enhance cell turnover. Optimizer features our Gyokuro Extract, a specially harvested Japanese green tea extract rich in antioxidants and anti-irritant properties. Please note: Clinique is currently updating this packaging. The product you are shipped may look different from the image shown.