straight·en·er
noun/ˈstreɪtnə(r)/
/ˈstreɪtnər/
- straighteners [plural](also hair straighteners)an electrical tool with two metal or ceramic parts that you heat and use to make your hair straight
直发器；直发夹 - any substance that you can use to make your hair straight
直发用品 - chemical straighteners
化学直发剂
- chemical straighteners