Rock the Red Seal Cosmetology Exam 2026 – Style Your Future with Confidence!

Before using a thermal iron on hair, it is important to test the temperature to ensure it is not too hot. Wax paper (A), aluminum foil (C), and plastic wrap (D) are not suitable materials for testing temperature as they may melt or burn. Tissue paper or white cloth (B) is the recommended option as it is lightweight and can signal when the iron is at a safe temperature for use. It is also easy to see if the paper or cloth gets singed, indicating that the iron is too hot and should be allowed to cool down before use. Therefore, option B is the most suitable and safe choice for testing the temperature of a thermal iron before using it on hair.