There seems to be a number of common misconceptions related to hair loss products, one of the most popular being the idea that the HairMax LaserComb has only been cleared by the FDA for safety, not effectiveness.
If you read the FDA clearance letter sent to HairMax (the manufacturers of the LaserComb) you will see that it clearly states ‘The LaserComb is indicated to promote hair growth in males with androgenetic alopecia who have Norwood Hamilton classification of IIa to V and Fitzpatrick skin types of I to IV.’ Here’s the FDA clearance letter.
HairMax carried out placebo-controlled clinical studies in order to prove the effectiveness of their device. Hopefully this information will clear this matter up. Here is a report related to a study carried out in 2014 – LaserComb Clinical Study.