?Not Easy Show on Dark Hair? The hair chalk is fun for kids but not a professional hair dye product. It is OK to apply on light hair like blonde. For darker or brown hair, the application can be more challenging. Follow these steps. Apply the color to small sections of hair, ensuring the hair chalk is brushed downward to prevent tangles. 2. Seal the chalk and dry the hair with a hairdryer. 3. To set the color, use gel or hairspray. Note that the chalk may feel slightly sticky. | ?MINI SIZE DESIGN?The length of the hair color comb is about 3.9910cm). Although the size is relatively small, it can be used 1-2 times for long hair and 4-5 times for short hair as long as it is well preserved.6 Various colors all mix to create a special hair color style. | ?Perfect Halloween Gift for Girls?Unleash your little girl's creativity with this ideal gift of a hair dye comb. With the ability to create unique hairstyles with different tones, this comb is perfect for daily use or as a party hit on special occasions like birthdays, back to school, Children's Day, Halloween, Christmas, festivals, cosplay shows, DIY parties, and more. A makeup gift for girls and friends. | ?Easy to Clean?The hair chalks are non-allergenic water-soluble and environmentally friendly and can last up to 3 days; Colors can be cleaned simply by washing hair as normal with water and shampoo. | ?Tips?1:Store hair chalk sealed to maintain quality. Don't expose it to air after opening.2:It is a temporary hair color product. Slight fading/hair hard is normal 3:Dry hair color with comb & dryer and wash before sleeping to avoid pillowcase stains.