2, the body is well nourished, the hair is long, the body needs to give more nutrition to the hair, and the nutrition of the body's own development is less. Regular hair cutting will make the body's nutrition longer and the hair more abundant; 3, clean and cool, long hair is not only hot, but also a hidden danger of bacterial growth. Easy to clean after cutting, very cool; 4. Change a hairstyle that suits you according to your preferences and face shape, and try a new hairstyle occasionally, which will feel very different.