A Hungarian scientist was using Low-Level Laser Therapy (LLLT) in research in 1967; the research was not related to hair growth. He had shaved the hair off the backs of mice in the area he was treating to better observe results. Half the mice received LLLT and the other half did not. The hair in the shaven area grew back much quicker on the mice receiving LLLT. As with many discoveries, this was found while working on a completely different research program.
