Frank Body Caffeinated Hair Mask. Full Size 4.23 oz. Brand new and sealed! Smoother, stronger, longer locks? Hair. We. Go. Lightweight yet deeply-hydrating, my Caffeinated Hair Mask is the secret to head-turning hair flips. My blend of strengthening keratin, scalp-soothing niacinamide, and moisturising comfrey root nourish all hair types and is especially helpful for babes with curly or dry hair.