Redken Root Lifter Volumizing Spray Foam (sold previously as Guts 10) is an aerosol spray-foam styling product that targets hair at the root for lift and fullness, rather than coating strands end to end the way a traditional mousse does.
Shaken and applied to towel-dried roots, it dispenses as a light foam, then blow-dries into medium-control volume with some frizz resistance, helped along by hydrolyzed wheat protein in the formula. Redken positions it for all hair types, including fine, coarse, color-treated, and natural hair, and recommends working it in section by section at the roots – lifting each section as you go – rather than spraying it over the whole head.
It finishes best with a round-brush blow-dry, which is when the root lift shows up most.