Each of these approaches basks in the glory of testimonials regarding safety and efficacy. The slightly more effective but slower galvanic approach uses direct current as it chemically destroys the hair. This technique, favored by lay technicians, competes with the more rapid thermolysis approach, which is often championed by medical professionals. Effectiveness of both types remains highly operator-dependent. Laser therapy enjoys broad-based popular appeal, but the method often fails to eradicate unwanted hair.
Most practitioners agree that several treatments are usually necessary on any given follicle.
To date, no studies have compared the wide array of different devices. Cost, potential for complications, and the necessity of multiple visits reduce the attractiveness of this techno-intervention. Aminolevulinic acid topically applied supposedly undergoes a chemical change to a protoporphyrin, which may subsequently be activated by a special laser. At least in theory, this procedure destroys the follicle. The compound inhibits ornithine decarboxylase, an enzyme involved in hair growth.