Laser treatment cannot make more hair. The important thing to keep in mind is that our bodies are constantly changing and as we age, some people will lose body hair and some may grow more in new places. Laser can destroy your hair follicles but cannot prevent new ones from developing. Laser hair removal will definitely help to reduce hair in any area of the face or body. Because the heat from the laser device is so strong, it severely and permanently damages the hair follicles. However, there is something called vellus hair, or peach fuzz hair, which is very fine hair that can appear anywhere on the skin and this hair can be difficult to treat. For reasons that the experts are still not completely sure of, the laser can have a hard time in treating and eliminating these hairs. In addition to the vellus hairs, single sparse hairs can also react similarly.
One theory is that the beam from the laser hair removal machine is easily absorbed by normal, dark, long hairs, also called terminal hair, but that vellus hair has a harder time absorbing this light due to their finer texture. This can result in the vellus hairs not being completely destroyed, but only minimally damaged. The smaller damage that wasn’t really “enough” can make the vellus hairs try to repair themselves by supplying more blood to the hair follicles and thereby be able to grow longer and stronger. After all, hair protects our skin and our bodies are programmed to produce it. It appears that the fine hair can be especially hard to get rid of because it provides warmth and shields the skin. It is important to be treated by a qualified laser technician that is highly trained in laser hair removal.