The Best Natural Shampoos For Guys

rx hair lsos#4. RX 4 Hair Loss Shampoo ($26 @ Amazon.com)

Again, no sulfates, parabens, toxins, or harsh chemicals, but it does block DHT, which can slow hair loss. The bottle claims you can see results in as little as 30 days. If they offer a money-back guarantee, we’d suggest taking them up on it if you’re looking sparse up top.