In the mean time, I called my brother-in-law and asked him about his recent hair growth.He said he was really amazed how such a simple and stupid sounding thing did the trick to his hair.He also said that my sister was making fun of him and of his trick in the begining.Once she saw his hair grow, she started to do that to stop her own hair loss. Well, I am blessed with black and thick hair.I will certainly rub my fingernails when I start to lose it. DP.