Clinique's fourth-generation brightening serum is a powerful dermatologist-developed solution for hyperpigmentation. The advanced formula, which includes their proprietary brightening molecule, UP302, niacinamide and even more vitamin C than previous formulas, delivers dramatic brightening results. It's clinically proven to visibly reduce stubborn dark spots, including post-acne marks, plus it visibly reduces irritation that can trigger future dark spots. Gentle enough for all skin types, including sensitive skin. Tested on all skin tones.