Protect your hair & extend your straight styles with the sulfate-free Joico Smooth Cure Shampoo. Ideal for wavy hair that needs to be tamed, whether coarse or fine, this ultra gentle cleanser creates sleeker, smoother strands that are far easier to manage. The silkening effect lasts for 72 hours, ensuring that your frizz is kept well & truly in check. The Smooth Cure Shampoo is powdered with a formaldehyde-free Kera Shield Complex, containing keratin, Brazil nut oil & tucuma butter, which strength & straighten in tandem. Frizz is reduced by 79%, with 3 days of humidity protection to boot. Apply to wet hair & lather, before rinsing out. Follow with the Smooth Cure Conditioner.