A bonnet hair dryer is similar to what you will find at a professional salon. The only difference is the intensity of heat that is sent through a salon dryer compared to a home version. The salon's version is much hotter and should only be used by professionals. But even when you use a home bonnet hair dryer, there are still a few steps and precautions that you should consider for safety and effectiveness.
Unlike a hand-held hair dryer, a bonnet dryer has a hard hood that you can pull over your head to get your hair dry, especially if you have a roller set. They come in large and extra large hood sizes to accommodate various roller sizes and the wattage (amount of heat that is generated) varies from 1,200 to 2,000 watts. The most common for use at home are 1,875-watt dryers.
Remember that there will be a surge of heat that is released from inside the bonnet and possibly from the back stand where there are air openings. So for safety's sake, choose a location that is free from flammable objects, things that can melt, papers and cloths. Keep it away from water sources. Place the bonnet dryer on a clean, hard surface to ensure that when you sit underneath it, the front of the bonnet is level with the top of your forehead. This will allow the heat to circulate around and through the rollers on top of your hair. A table that is about 3 feet high will be an ideal place for using your hair bonnet.
Bonnet hair dryers use up a significant amount of energy in the home. The higher the wattage, the more energy it is utilizing when it is turned on. If you turn on the dryer while many other items are draining electricity from your home, you could blow a fuse and cause the electricity in that area of the house to shut off. Before you run your bonnet dryer, turn off electrical items that you don't need, including lights, heaters and air conditioners.
Open the bonnet dryer and click it into place. (Do not turn on the dryer when it is closed.) Lay a pillow behind your back to get comfortable and add pillows underneath yourself to lift your body up to the correct height, if necessary. Once you are in a cozy spot that allows the bonnet top to cover your hair from the crown to the nape of your neck, turn on the unit.
Do not sit under the bonnet dryer for more than 45 minutes. Any longer than that is overdrying your hair. This could make your hair dry and brittle. In many cases, 20 to 30 minutes will be sufficient to thoroughly dry your hair. Do not make the mistake of falling asleep under the dryer unless it is equipped with an automatic shut-off timer. Unplug the unit promptly after use and let it cool down before folding it up and storing it away.