The H2PRO Curling Series was constructed to handle with ease with optimal performance for professionals. Barrels are baked in 3 layers of ceramic infused with tourmaline for enhanced ionic treatment. Variable temperature control allows for use with all hair types. Real diamond powder is infused to the ceramic to protect the barrels and help penetrate the heat deep into the hair. The diamonds also make the H2PRO Curling Iron chemical and scratch resistant.