Most people need at least 6-8 initial treatments spaced 6-10 weeks apart. This is because hair grows in 3 phases and is killed in the first “anagen” active growing phase. Several treatments are needed to target ALL hair in the active growth phase. Approximately 6-10 weeks after every treatment, additional treatment is required to eliminate the hairs that came out of the dormant phase and are now active. After 6-8 treatments or so, patients should experience a considerable percentage of hair reduction. Depending upon hair type and genetic factors, some clients may require additional treatments beyond these initial treatments.

Usually, treatments are spaced 6-8 weeks apart to start, and gradually move to 8-10 weeks apart after the initial 2-3 treatments. Instead of following an arbitrary schedule, wait until you have experienced shedding of the treated hairs (should complete within 2-3.5 weeks) and you see enough hair come in after the hairfree period to justify the next treatment. 

Last updated on February 6, 2010 by Sarah Yousuff, MD