First of all I must say that I have yet despite 52 full hair. For prevention, I've tried numerous renowned "little miracle cure" which one should take (s) over the years. If not I've found some positive effect. These product which I use every 2-3 months for about 2 years, I had after a few applications amazed notice that after washing only 10-15 hair in the sink and are no longer 30. Moreover, the hair grows faster obviously. While I usually went to the hairdresser every 6 weeks I have to go at the latest after 5 weeks now. The only product that, in my opinion in terms of hair growth their money's worth.