Strong for combing and sectioning your hair. while other combs made out hard rubber. Molecules tighten to prolong, they only get better with time. DUPONT Delrin with its ultra glossy, smooth-as-silk surface, glides with "flow-through" combing. 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 withstands the extreme heats of blow drying. Manufactured exclusively from DUPONT Delrin acetal polymer a 100% professional thermal material.