Heredity is one of the main factors affecting hair softness. Some people are genetically influenced, and their hair is naturally curly. This kind of hair doesn't become particularly soft at all, and it is especially difficult to comb at ordinary times. But most people are influenced by genetic factors, and their hair is black and smooth, and looks softer. This is a congenital factor, and it is difficult for people to change.

Charge repulsion is also an important factor affecting hair softness. Human hair itself is positively charged. When growing in contact with different occasions in normal life, it will also produce a layer of frost, which will bring some positive charges, so it will produce a situation in which the charges repel each other, which will make the hair particularly short-tempered, especially in a dry environment. People will feel that their hair often flies.

Endocrine and hormone are also important factors affecting the magical body. Hormones in the human body are not nutrients to maintain the normal development of the human body, but they will directly affect the quality and life of hair. If the androgen in the body is strong, it will make the endocrine disorder in the body, make the hair curly and soft, and it is easy to dry and knot. But the endocrine function in the body is normal, the hormone secretion is normal, and the hair will become more supple.

Blood circulation can also affect the softness of human hair. Most of the nutrients absorbed by human hair during normal growth come from blood, and there are a lot of capillaries on human scalp and skin. These capillaries are important channels for hair transportation. If human beings can't absorb enough nutrients from the blood, they will make their hair grow straight without bending, and it will become particularly dry. Normal blood circulation in the human body will make the hair absorb enough nutrition, make the hair elastic and shiny, and look natural and supple. In addition to these factors, the closing degree of hair scales will also affect the softness of human hair. When the phosphate in the hair is damaged and cannot be completely closed, the hair becomes dry and short-tempered.