- Touch up gray roots and stands instantly! Don't wait for your hair appointment to cover up any unsightly roots or hair strands. Masc-A-Gray covers gray roots instantly, so you color always looks salon-perfect. Also excellent for mustache and beards. Mask grey roots and strands, or create beautiful highlights in no time at all. Masc-A-Gray dries in a minute and stays on until shampooed off. Easy to apply, non-permanent color brushes on with a mascara-style applicator. Gives you fast, even coverage in between salon visits. Water-resistant and never flakes or stains. Made in USA.