If the ion perm is burned, there will be a mushy smell, and the hair is a little yellow, you can also take about 20 or so hair, wrap it around your fingers, and then exert appropriate force to stretch the number of times, if the hair is elastic, there is no pulling phenomenon, it is healthy; If the number of pulled breaks is more than 15 percent of the hair, the hair is dry and scorched. Straight hair curling, black hair bleaching, hair industry revolution is evolving again and again. Now, the dream of straight hair perm appeared again! It is through a new technology to make dry hair, natural curls to be corrected, and repair the damaged hair caused by ironing, dyeing and ion ironing effect, so that the hair recovery, become smooth, smooth, this is ion ironing, you can create smooth smooth straight hair, it makes the dream of beautiful straight hair ladies surprise.