Jack Black Nourishing Hair and Scalp Conditioner While it can be used on all hair types, this top-rated Jack Black Nourishing Hair and Scalp Conditioner ($22) works especially well on curly or coarse hair as it reduces dryness and hydrates those often flaky, itchy scalps. Image Source: sephora.com Jack Black Nourishing Hair and Scalp Conditioner $22 from sephora.com Buy Now