Perm time depends on your hair quality. Generally, healthy and hard hair is hair without any dyeing. The softening time of the liquid medicine is about 30 minutes. When perming, the heating time is15min, the cooling time is 20min, and then the second styling liquid is applied for 20min without heating. Do it well.
Because everyone's hair style is different, the perm method is different, the length is different, the hair quality is different, and even the amount of hair is different, so the perm time is different. Perm includes hot perm, ionic perm and cold perm. The cold ironing time is short, about two hours; The time of ion scald is about 3 hours; Scalding is the slowest, it takes 4-5 hours.
Perm instructions
Whether perm or dye, time is nothing more than two points: the quality of hair and lotion, healthy hair, damaged hair and soft hair. The ranking of the three is that soft hair lasts the longest, then healthy hair and finally damaged hair. The quality of high-grade potions and low-grade potions is definitely different, so the effect is naturally different. Not everyone chooses a perm. Diversified styling increases the difficulty of hairdressers and the time of curling hair, especially long hair.
Perm will make the hair scales open, and it will be much easier to recolor them. If you dye your hair first, when you perm it, the scales will open, leading to the loss of pigment. After perming your hair, you may find that you just need to highlight a few locks of hair that you originally planned to dye completely, which can save a lot of money.
Baidu encyclopedia-perm