The goal is to treat the hairs while they are in the earliest part of the anagen stage. Since all of your hairs will be in different stages of growth at any given time, it is important to treat the hairs at the recommended growth cycle for each area. For example: Face, underarms, bikini – 4-6 weeks between treatments Back, chest, legs – 6-8 weeks between treatments
In order to have the best success of eliminating the hairs permanently, it is recommended to stick to the schedule of the hair growth cycle. Otherwise, you miss the optimal time to disable the follicle, thus extending the time needed and the number of sessions required to permanently remove the hair.
Every person, however, has varying growth cycles due to hormone changes and other factors that stimulate the blood flow to the hair. This being said, you may need to come in sooner than typically recommended if your hair grows faster.
When you start treatments, when there is more growth, you will need to come in more frequently and stick to the recommended treatment schedule. However, as you notice the growth slowing and less hair coming in, you can wait longer between sessions.