The reason why you would require more than one treatment is there are different cycles of hair growth. Ideally, we want to be able to attack the hair during the active stage of hair growth (anagen stage) which is when the hair follicle has a full root. Because we don’t know which hairs are in right stage at one time, that is the only reason why you would need more than one treatment. Normally 6-8 treatments are required for best results.
Actively growing hairs that are treated should not grow back. Once a hair follicle is damaged it cannot grow hair. However, hair follicles that were not in the active growth phase will need to be treated. It’s also not unusual for patients to have a touch-up once a year after initial treatment.
The results will vary slightly based each client’s skin type, hair characteristics, treatment area, gender and age.