By Marissa Gold
Your genes determine the thickness of your hair. While you can't change it, you can prevent hair loss with products like NIOXIN, a hair-care line designed for thinning hair. The cleaner combats shedding and keeps hair in peak condition with vitamins, proteins, and amino acids to promote healthy growth. It also removes DHT, a hormone that some people produce in the sebum on their scalp, which is believed to be a primary cause of thinning hair.