I have been using the Hairmax Ultima 12 into the 7th month, (3x, 8 minutes) and even though at the 4th or so month juncture, I thought there were positive results, I have now come to the conclusion, that the laser caused substantial dark and strong hairs affording scalp coverage to shed en masse at various junctures, replaced with thin vellus hairs. All my tests ferritin, DHT, thyroid, testosterone, etc. were normal--same for vitamin D, though recently I decided to take cod liver oil tsp. and a half daily.. to make D even higher though within normal range. I logged photos from day one.. so I have an archive that is flooding my iphone. My dermatologist agreed, at least for me, that the whole escapade with laser has been a failure. Why would I have more hair before I started than what I have now. Crown thinned, sides thinned..I am talking over MONTHS. Wonder if there are others who have had this unfortunate experience. Early high expectations, and then crashingly low if not significant, hair-losing results.