Using A Horse Shampoo

Weeks ago, my brother bought a shampoo for horse. He said it's helpful for people with hair loss problems. And thinks it's the best hair loss shampoo in the market. don't know though, since there are a lot of hair loss products out there and never have I used any of them. Let's see then if it can help with the hair loss. Though he's not going bald. He just want to have a thicker hair.