Images Laser Hair Therapy - program is wonderfully simple. It is painless, with no side feffects and no surgery. The complete program takes 12 months, with 37 or more treatments throughout the year. For the first 4-6 weeks, a client sits under the laser light for two 30 minute sessions oer week, then once a week for 14 weeks, once everyother week for sixteen weeks, and once a month for the last 3 months, to complete the program.