A 51-year-old patient had no particular complaints but wished to undergo a treatment course for preventive purposes. After EAF testing, most indicators were above normal, around 60-75. Treatment was mainly conducted with RV, KL, GI, and ZB emitters. The course was not regular, totaling 10 sessions over a month. The patient was almost completely gray. One month after the start of treatment, the patient noticed all hair had turned dark. All short or newly growing hair was also black. No side effects were observed.