Color Wow Dream Cocktail Carb Infused Leave-In Thickening Treatment boosts fine. thin hair with instant body and fullness. This heat-activated leave-in formula is infused with a high-carb complex of corn starch. cellulose. and oat bran to thicken hair. while quinoa and keratin proteins strengthen and add shine. The result? Plumper. fuller-looking hair with long-lasting volume.