Biologique Serum PIGM 400 is a targeted serum that helps prevent and reduce existing age spots, sun spots and other dark spots caused by hyperpigmentation. This spot-correcting serum limits the appearance of new spots, reduces irregularities and brightens the complexion. This anti-aging serum evens out your complexion and helps prevent cell aging with antioxidant ingredients. Ideal for skin discoloration and/or a dull skin tone caused by hyperpigmentation. Optimal results of Serum PIGM 400 are achieved by combined use with Lotion P 50 PIGM 400 and Creme PIGM 400.