OTZI Multi-Acid Drip AHA/PHA Resurfacing Serum Deal with dull, rough skin with this OTZI Multi-Acid Drip AHA/PHA Resurfacing Serum ($35) which also includes skin-calming tiger grass and a Korean tea blend along with those active, exfoliating acids and willow bark. Image Source: sephora.com OTZI Multi-Acid Drip AHA/PHA Resurfacing Serum $35 from sephora.com Buy Now