William Gaunitz, FWTS is a Fellow of the World Trichology Society and the founder of Advanced Trichology and Evolution Hair Loss Institute. Since 2002, he has helped thousands of men and women regrow hair and reverse thinning through a science-backed, non-surgical protocol — the Advanced Trichology 5-Step System (Detox, Nutritional Supplementation, Scalp Serums, Complete HairCare, and Laser Therapy). His work pioneered the first and only nutraceutical brand accepted by the American Hair Loss Association. William sees patients in-person at two Arizona clinics — Scottsdale (7450 E Pinnacle Peak Rd, Suite 258) and Tempe (60 E Rio Salado Pkwy, Suite 900) — and offers VIP in-person consultations at his private office in Laguna Beach, California, plus virtual consultations worldwide. A recognized authority on hair loss, William has been featured in Vogue, Byrdie, Inc., SHAPE, Robb Report, Well+Good, and The Knot, and hosts The Trichologist podcast. He specializes in male and female pattern hair loss, telogen effluvium, alopecia areata, drug-induced hair loss, and complex nutraceutical and scalp protocols.