With SHR, low intensity light in rapidly firing sequences deliver heat to the hair bulbs. The heat is low enough not to cause pain but just enough to destroy the hair bulbs in the hair follicle. With SHR, we can achieve painless permanent hair removal and this method can be used on all skin types.
The theory behind permanent hair removal is that the hair follicles’ structures being darker (more pigmented) than the surrounding skin, will absorb more light or laser energy than the surrounding skin. Heat therefore builds up faster at the hair follicles than the surrounding skin. As such we are able to “selectively” destroy unwanted hair.
Hair reduction with SHR technology will typically need several sessions. The reason for this lies in the hair’s growth cycle. About one third of all the hairs in the skin are in the growing phase. The other two thirds are either “sleeping” or in between growing and sleeping. All technology, can zap only hairs in the growing phase. So each time when we do a hair removal treatment, we are only able to zap an average of 20% of the hairs that are growing.