The product has a slight fragrance. The depth of the color is determined by the amount and layer of your hair. Everyone's hair color, hair quality, length and hair volume are different. We can't determine how much you want to use. The product is water-soluble, non-wet and non-sticky. It is weak in setting power and can be washed off. It is recommended that you wash your hair and blow it for 8 ~ 9 minutes to dry it, then use this product, and then use the styling products you usually use. There are two ways to use: 1. Multi-color, first color, then another color. 2. Mixed colors, different proportions are mixed in the palm of hand, and then the effect is different, you can try it yourself.