Usually, lack of nutrition, hair damage, improper hair care, etc. can lead to split ends in newly grown hair. 1. Lack of nutrition: It may be due to unbalanced nutritional intake or lack of nutrition, etc., resulting in the inability to meet the needs of normal hair growth. Usually hair nutrition includes protein, lipids, and various trace elements and minerals, etc. When the scalp follicles lack the relevant nutrients, the incompleteness of the hair structure will lead to new hair growth forked. 2. Hair damage: the chemical composition of the perms and dyes in the potion can easily lead to the loss of nutrients in the hair, causing damage to the hair, so that the new growth of hair appear dry and frizzy, split, fragile and easy to break and other phenomena. 3. Improper hair care: usually hair contains more protein, has a certain toughness, generally not prone to split ends, but when the use of alkaline shampoo, or a long time to let the hair in the sun, will destroy the collagen or keratinized layer in the hair, the hair will reduce the oil will lead to an increase in brittleness and thus cause the newborn hair to appear split ends phenomenon. Split hair may also have other reasons, it is recommended that daily life, pay attention to the care of the scalp and hair, such as the emergence of uncomfortable symptoms can go to the regular hospital dermatology department, do not self-medication to avoid aggravating the symptoms.