I have read the article. There is a great deal of speculation about the use of light therapy in certain areas, like graft growth after hair transplants. I know that grafts grow after a hair transplant when the surgery is done correctly and can’t be accelerated by using such a modality. The author speculated on the use of infra-red light, but there is no evidence available for this use either. Most of the studies on LLLT therapy are written by people who have something to profit by pushing this technology. Laser hats and other devices cost up to $3,000 retail. Almost half of the money goes to the doctor selling it, so do you think that a doctor can be impartial when bringing you this technology? I don’t sell them because I refuse to make money from my patients without giving them value.