However, you can't have a perm often. It doesn't matter if you perm it once in a while. If you perm your hair often, even the best hair will get worse. You know, dyeing is the most harmful to hair, especially to people with poor hair quality, so perm should be carried out according to their actual situation.
The damage of perm to hair mainly comes from the softening of medicine 1, followed by heating. Most hair injuries are related to softening. Strengthening the action time of perming water will cause more damage to hair, so it is necessary to control the softening when perming, and don't let the hair overheat.
Nursing after perm is also very important. Choose good quality (low alkalinity) shampoo when washing your hair. Besides using conditioner every time you wash your hair, deeply nourishing your hair once a week is a good way to enhance the luster of your hair. After shampooing, apply the essence to the hair from the root to the tail, and repeat for 3 times until the essence is completely absorbed.
Refer to Baidu Encyclopedia -Perm for the above contents.