Tween Time Temporary Haircolor Touch-Up Stick... RouxÍs Tween Time is a one of a kind instant temporary color crayon. Perfect for concealing small areas of gray or covering/blending re-growth area at the scalp. Our formula is easy to apply and is non-damaging so it can be used everyday. Available in a stick form: 1/3 oz. Perfectly blends to cover up re-growth area. Camouflages the first signs of gray.