Refine Treat. This supercharged, lightweight serum works to visibly refine and gently exfoliate the skin with 4% Glycolic Acid and the Pore Care Complex. Combined with Niacinamide and a blend key pore-targeted ingredients, this serum is a comprehensive solution to visibly improve and balance skin's tone, texture and PORES. Smoother, clearer-looking skin days are ahead!