In Part 3 of this special four-part episode of The Blend, Sonal Choudhary, MD, a Dermatopathologist, Dermatologist, and Director of the Integrative Dermatology and Skincare Clinic at the University of Pittsburgh Medical Center, and Natalie Gardinier, MPAS, PA-C, a Dermatology Physician Assistant at the University of Pittsburgh Medical Center Dermatology in Pittsburgh, PA, review the role that nutritional supplements such as Vitamin D, niacinamide, Zinc and epigallocatechin 3-gallate (EGCG), the polyphenol found in green tea, plat in treating acne. They also discuss the use of light-based therapies in acne treatment.