This highly effective, concentrated serum works by targeting various points of the pigment production process, helping to fade multiple types of hyperpigmentation, as well as red marks. 💜 As always, our final formula is clinically tested, and this serum is clinically proven to reduce the appearance of dark spots and even out skin tone, both within 2 weeks and over time.* *Based on an independent clinical study of 50 participants with visible hyperpigmentation using the product daily over 12 weeks.