I’ve only just started to use a second bottle of this product and fully expect to need a third bottle to be sure this product produces the results I’m hoping for. Meanwhile, I do think there are some demonstrable results, i.e., my nails seem to be stronger. My main reason for using Hair Force is to promote hair growth as, in the later stages of my life, my hair has become very fine and is becoming sparse, which concerns me. As yet, I think it’s too soon to give an in-depth review of this product.