The best shampoos for frizzy hair go a long way toward keeping hair soft, smooth, and shiny, and industry pros recommend having at least one in rotation for days when frizz needs a gentle reminder to stay in place. Shampoos with proteins will help strengthen weak spots in the strands, she says, and it’s always best to look for gentle cleansing agents instead of sulfates, since sulfates can strip the hair of its natural oils and cause more frizz. Below, find the 15 shampoos industry insiders and top stylists most recommend for anyone needing an uptick in moisture and a downgrade in frizz.