redhead_friendly_shampoo_2-1_shampoo We may receive commissions from links on this page, but we only recommend products we love and deem ‘redhead friendly’. Full Disclosure. AUTHOR: H2BAR Team in Does 2-In-1 Shampoo Really Work? Celebrity Colorist Gives Tips and Advice This product contains 2 parts moisture and 1 part protein to give your hair everything it needs to be nourished and hydrated.