First of all, the growth of each hair will be affected by the speed of hair root cell division. The growth rate is uneven. After a long time, the hair will become uneven and affect the image. Secondly, too long hair will increase scalp oil production and cause sebum metabolism disorder; Finally, if you don't cut your hair for a long time, thick hair will make the hair at the hairline sparse, and in severe cases, it will damage the hair follicle and form hair loss.

Timely pruning can stimulate the metabolism of hair cells, ensure nutrient supply and promote hair growth, thus keeping hair healthy and beautiful. Cutting off hair layers, reducing hair weight in time, trying different hairstyles and adjusting parting lines can prevent the formation of stubborn hair lines and baldness. Generally speaking, hair must be trimmed once every three months. If you have short hair and want to keep it long, it is recommended to trim it once a month. People who love oily hair are often sensitive to scalp cells, so they should be trimmed more to avoid hair damage. For people with dry hair, hydration and nutritional care are needed at the same time of pruning to prevent hair from turning yellow, brittle and dry.