I was really stressed out because of postpartum hair loss, but my younger sister did some research and said hair collagen was good, so she sent me three bottles as a gift to try. I've been taking them regularly, and this stuff is actually quite something! Hahaha. First off, my hair feels a bit thicker and stronger, and I'm relieved to see that the amount of hair clumping in the drain when I wash it has decreased significantly.