Hair chalk is the hottest hair fashion for this yearnhair color chalk crayonnMaterial: Gypsum powdernCharacteristics: a smooth writing. Clean. Donu0026#39;t stick in hand, Non-toxic environmental protectionnHair Coloring types: temporary Hair Coloring, Color: 6 colorsnMethod of use: 1) requirements in the wet hair coloring, gently put the pen down from the smear in the hair, avoid by all means is up and down repeatedly; avoid rough 2) dry hair 3)Use Hair stick Or splint Perm after dry hair, Fixed color, then you may also Spray hairspray and other products Keep away from water