Elecrical Optical Synergy (ELOS) uses a combination of light based energy along with radiofrequency energy. Although this technology is still not perfected, ELOS™ technology may be more effective than other lasers in treating white and blonde hairs.  ELOS™ or photoradiotherapy, combines light energy (either narrow spectrum laser or broad spectrum pulsed light) with bipolar radiofrequency electrical energy simultaneously.  Radiofrequency is not sensitive to skin or hair color.  This type of electrical energy is considered to be chromophore-independent.  The electrical radiofrequency surrounds the hair follicle.  The energy is converted to thermal energy, or heat.  The heat destroys the hair follicle itself.  Lower overall energy levels are needed for this system and adverse effects are similar to current lasers.  The combination is needed for effectiveness because radiofrequency itself is not quite as effective as light energy.  The radiofrequency, however, is needed for the treatment of non-pigmented hair (including white, gray, blonde, and red).  Even though photoradiotherapy is marketed to be more effective in treating non-pigmented hair, it definitely does not treat these hairs with the effectiveness as colored hair. It also does not seem to offer any advantages over current modalities for the treatment of darker hairs alone.