I use the grow new hair treatment only on my scalp and massage it for about 5 minutes, then leave it in for 30 minutes. I started to use this product one year ago. My husband thinks I will don�t need it anymore, because my alopecia and extremely thin hair is gone. I don�t care if I have perfect hair or not it doesn�t matter. This product improves the quality of my hair and if I use too much it does not cause any damage. I just feel I am doing the best to maintain healthy hair!