these products have a variety of ingredients that may still need more research to back up their claims. Nioxin and Rogaine both offer 5% minoxidil products, and Rogaine also offers a 2% product.

System 2 is formulated for hair that has not been colored or chemically treated and has more progressed, pronounced thinning. Alyssa Milano isn't the only fan of Nioxin — it has an army of rave ...