1. It is non-toxic, non-irritating, non-microbial pollution, and will not cause skin allergic reactions.
2. No peculiar smell, or natural fresh and pleasant smell.
3. Colorless or natural color, fine texture.
4. It is easy to store and has a relatively stable shelf life.
5. Choose products that are suitable for your hair quality, such as anti-dandruff, moisturizing, and softening effects.