1, cold perm time is short, usually about two hours, if the hair is long and hard, it will be longer. Generally, the blanching time is 4-5 hours, and the ion blanching time is about 3 hours.
2, note: it is best to try to shorten the perm time and perm times, reduce the damage and injury to the hair, but also conducive to health!
3. The price is generally between 150 and 200.
4, the harm of perm: in the process of perm, it will cause the scales on the surface of the hair to be destroyed. Leaving the internal structure of hair unprotected will lead to the loss of internal moisture and nutrients, which is harmful to hair, scalp and hair follicles, and will denature the keratin of hair more or less, making hair easy to yellow, brittle, easy to fall off, dull and inelastic.
5. Maintenance: Vitamin B complex and carotene can be supplemented after perming to help reduce injuries. This is because vitamin B 12 can promote smooth blood circulation, improve the utilization rate of protein and promote the growth and development of head cells. Carotene can absorb ultraviolet rays and reduce the degree of oxidative discoloration of hair. Taking vitamin B together with carotene can make hair more moist and shiny.