1, ordinary perm will cause some damage to the hair, resulting in dry hair and hay-like feeling. However, a healthy perm will basically not damage the hair quality, and the hair quality is the same before and after perm.
2. Ordinary perming will make the hair after perming richer and have a fluffy and curly effect. The healthy perm pursues a more natural and healthy curling effect, which makes the hair look more supple and shiny.