Raw hair refers to hair that has not undergone any chemical treatment. In the true sense, raw hair. This kind of hair is very rare, so the price is also the most expensive. At present, the real hair growth in the market does not exceed 10%. Many factories treat ordinary hair. The hair is sold as hair growth in order to increase the profit of the product. Therefore, when choosing hair, you should not only look at the price, but also the quality of the product. Especially after more than 10 washings, the hair growth can maintain the quality of the hair to a large extent after washing. Such hair has a service life of more than 1 , At the same time, it can keep the hair smooth and not knotted for a long time, which is very popular with high-end customers.