A heat resistant carbon comb is necessary to perform the Brazil Yourself Keratin treatment on any hair. This is a special comb that WILL NOT MELT or become soft from the high heat of a flat iron. A must have hair tool for professionals to perform any type of keratin treatment on the hair. It is a quality product that will last and not become deformed from any heat. A regular hard rubber comb will not endure the heat from a hot iron and will become soft or melt. You will risk burning your hair or worse, yourself. A compatible, heat resistant carbon comb is recommended and necessary to help get the best results possible from your treatment.