Light emitted by the laser is absorbed by the pigment (color) located in the hair follicle, disabling several follicles at a time to eliminate or significantly impede the hair’s growth. These lasers tend to treat hair follicles that are in an active growth phase and therefore more than one treatment may be required to disable hair follicles that subsequently enter this growth phase.
Laser treatment itself may cause a slight tingling sensation. Immediate after-effects may include redness and swelling, which disappear in a short time. Procedure is then repeated again at a minimum of every 4-8 weeks depending on the individual’s hair growth rate.