Tata Harper Resurfacing Serum. This Product Is: . a natural daily resurfacing facial serum that uses AHAs and BHAs for glowy skin. Good for: . all skin types, especially oily, blemish-prone and combination skin. Why We Love It: . Tata Harper Resurfacing Serum works to transforms dullness with a combination of 7 AHAs and BHAs that remove dead skin cells to give you a healthy-looking glow. This lightweight formula restores radiance with 9 sources of glow, 9 sources of antioxidants, and 4 sources to smooth and soften the appearance of skin. Vitamin C helps to brighten skin, for a natural glow.. .