HAIR TOUCH UP root concealer brown 75 ml HAIR TOUCH UP root concealer #brown 75 ml is a temporary root touch-up product designed to hide gray roots in between hair color appointments. The product comes in a spray can and is applied directly to the roots of the hair to instantly blend away gray hairs. It is formulated with pigments that match most shades of brown hair and lasts up to three days. The product is easy to apply and washes out with shampoo.