GH Beauty Lab scientists take a look at AeroLift modern hair accessory styling tools each using technical devices in the Lab and with client or professional testers. Hot Tools is marketed to professionals, whereas Hot Shot Tools is bought exclusively at Sally Beauty Supply stores. The memory recall on this thermometer stores as much as 20 temperature readings. Our largest gripe: The GHD does not offer a number of temperature settings. It has variable heat settings to give customers extra control, and the plates are slightly longer than most straighteners, a feature that could be useful for styling longer ergonomic hair tool. The instructions Perry received mentioned to attend a minimum of 1 minute for the iron to completely heat up, but she felt that it reached her desired temperature properly before that. It has five temperature settings that vary from 266° F to 410° F, and an auto-shutoff function that turns the straightening comb off after 30 minutes. The curling iron comes with instructions that embrace a guide that recommends temperature settings based mostly on hair sort: 280° F to 330° F for effective or thin hair