... its unique laser with long pulse-width 808nm to penetrate into hair follicle. Using the theory of selective optical absorption, laser ... preferentially absorbed by the melanin of the hair. And then the hair shaft and hair follicle are heated rapidly in order ... the body, such as:Lip hair, beard, chest hair, armpit hair, back hair, arm hair, leg hair, and unwanted hair outside the bikini line; Effective ...