This Kent Combs Wide Tooth Cutting Comb KSC05 is heat and chemical resistant made from 100% hard rubber.  The seamless teeth ensure no cutical damage is caused.  The saw cut teeth enable them to be gentle on your hair and scalp.  We use and recommend Kent Combs due to their ability to endure high heat and resistance to chemicals.  Their advanced FLEXINITE technology allows them to be flexible, strong and durable.