Three kinds of injuries to hair

1, alkali damage leads to the loss of protein.

When dyeing, the alkaline agent added to the liquid medicine makes the hair swell, makes the main agent permeate, and has the function of destroying the protein of the hair. After dyeing the hair ends for many times and losing a lot of protein, even serious pores can be seen under the microscope.

2. Excessive thermal damage leads to water loss.

Scalp is very sensitive to temperature, and excessive thermal damage is the direct cause of water loss. After the hair dryer blows the hair with hot air, it will also lead to oil secretion. For those who love oily scalp, oily scalp will be more obvious. Try to use hair dryer less.

3, oxidative damage-lead to disulfide bonds and melanin damage.

Hair contains disulfide bonds, and oxidized sulfur dioxide bonds are negatively charged. The more seriously oxidized hair, the more negative electricity accumulated inside, and the hair scales open because of negative electricity repulsion, and the adjacent hair also appears domineering and grumpy because of negative electricity repulsion. When disulfide bonds are oxidized by various oxidants, melanin in hair is also oxidized, making hair yellow. Therefore, roughness, rashness, bifurcation, tangling, dullness, yellowing and other phenomena appear, which is the reason for the loss of melanin.