Lasers are supposed to give best results of all the treatment options suggested for becker's Melanosis
Lasers used in becker's are Q switched ruby or Nd YAG Laser, Erbium YAG laser, fractional lasers and IPL. Some dermatologists are also of consensus that first a hair reduction laser should be used to reduce the hypertrichosis( excessive hair) over the nevi followed by use of pigmentation reducing laser. Bangalore being a metro city and a cosmetology hub too, these treatment options must be available at most of the cosmetology and laser centres of the city.
Hope that answers your query.