Because of the alkaline components and oxidation in the liquid medicine for perm, the scales on the hair surface will be destroyed. Leaving the structure inside the hair unprotected will cause the loss of water and nutrients inside the hair. This is very harmful to the hair, which will denature the keratin of the hair more or less, make the hair yellow, brittle, lose luster and elasticity.
The harm of perm is permanent. Once the hair is damaged, it takes a long time to recover slowly.
In order to prevent hair loss and protect hair health, perm must not be too frequent, and do not use inferior perm agents.