Professional Skin care Products › Mandelic Brightening Serum Image 1 of 1 Mandelic Brightening Serum $40.00 Mandelic Brightening Serum with Niacinamide, lifts pigmentation, exfoliates, and helps to reduce the appearance of pores. Add To Cart Added! Mandelic Brightening Serum with Niacinamide, lifts pigmentation, exfoliates, and helps to reduce the appearance of pores.