I find reams of Amazon reviews that replicate my experience. Remember there are those who are offered perks to give five star reviews. This is esp. true with the helmets. Many say that they lost lots of good, strong hairs that never came back... that pretty much verifies my experience. My dermatologist will notice in person how many weak vellus hairs have replaced my strong ones. Vellus or thin hairs do not give scalp coverage. You can contact the doctor at the Baldblog and share your concerns. He will probably write back.. I have respect for his honesty. He does NOT support LLT as a hair growing avenue.. He questions research findings and techniques.. He alleges that the purveyor of the product should not head up or interpret the research. Once again I stand by my experience. Maybe yours will be different, hopefully.