Manufactured exclusively from DUPONT Delrin acetal polymer a 100% professional thermal material. DUPONT Delrin is virtually chemically inert and will not absorb sterilizing solutions, perms, conditioners, shampoos, oils, water, etc. Also can be wet or dry sterilized. DUPONT Delrin is virtually static free for no "hair-raising" combing. DUPONT Delrin with its ultra glossy, smooth-as-silk surface, glides with "flow-through" combing, never dragging or tangling.