what is forget frizz anti-frizz shampoo? not feeling frizz? as the first step in your frizz-fighting routine, forget frizz anti-frizz shampoo locks in moisture + locks out frizz for 72 hours* while sealing in long-lasting smooth. who it's for medium-to-thick, coarse, wavy + coily hair types (2a-4c) prone to frizz. why it's special leave frizz on read with this smooth-sealing shampoo that visibly reduces frizz while giving strands some lightweight hydration. forget frizz is formulated with extended humidity shield technology—made up of smoothing molecules + extended-release capsules for long-lasting smoothing while blocking out humidity—alongside aloe leaf juice + our signature sea buckthorn to help seal in moisture + water lily extract to tame frizz + improve manageability. long-lasting frizz fighting: forget frizz helps reduce frizz by up to 74% for 72 hours.* a moisture boost: get all-day frizz control + lightweight hydration.