We don’t know too many people that are using their hair straighteners vertically, but there must be a few since ISA has made a point of clarifying that this model is intended only to be used horizontally, i.e., perpendicular to your hair. According to the manufacturer, using the hair straightener horizontally reduces hair pulling for a more comfortable experience. This may be particularly important to you if your hair tends to knot easily or you have unruly curls and texture.
Before placing your entire head under unnecessary heat conditions, try straightening a small section of your hair with what you believe is your ideal heat setting. Take notice of the way your hair reacts to this temperature, paying close attention to any fraying or singeing that may result. Smoking and that dreaded burnt hair smell are a sign that you may need to tone it down a bit to avoid permanent damage to your precious locks.
Achieve straight, sleek locks: Mist hair with ghd heat protect spray and place a fine section of dry hair between the plates of your ghd Classic Styler. Ensure that the styler is as close to the root as possible before closing the plates. Then gently move toward the tip of the section in one simple gliding motion. Repeat the process with each section of hair, gliding once from roots to ends.