Blow drying, brushing, and using a flat iron on a regular basis are all damaging to your hair. After have a properly performed Japanese Straight Perm, you won't need to use these strong methods to style your hair the way you like. This way, over time, and given the proper care, your hair is likely to get healthier. Remember also that starting with healthy hair makes a tremendous difference. Expect that your hair will be as healthy after the process as when you first come to the salon. This process is not meant to repair damaged hair. Other processes, such as the Cashmere Luminance are designed for repair. Of course, any chemical treatment will have an effect on your hair. This is why it's very important to only consider using the best-quality products, in the right mix, with the most up-to-date technique and procedures, to be sure you only receive the best possible treatment.