With a brow lift we depend on the growth cycle of your eyebrows. We are dealing with anagen (growth phase), catagen (transition phase) and telogen (resting phase). In the resting phase, the hair will come loose from the follicle and then grow again in the anagen phase. This process always repeats itself and takes an average of 4 to 6 weeks. If your hair is in the new anagen phase, a brow lift will last longer for approximately 6 weeks. If your hair is in the telegone phase, a lift may last a little less long, usually this is 4 weeks. You will not be informed in advance. To find out which hair growth phase you are in, we recommend repeating the brow lift treatment once every 6 weeks, otherwise you will double treat the hairs that were still lifted and this is harmful to the hair follicle.