noun
hair removal device; depilator; epilator
Refers to any device used for removing unwanted body hair, including electric shavers, epilators, and IPL devices.
新しい脱毛器を買ったので、早速使ってみた。
I bought a new hair removal device and tried it out right away.
この脱毛器は肌に優しい設計です。
This depilator is designed to be gentle on the skin.
除毛 also means hair removal, but 脱毛 is more common for cosmetic hair removal; 脱毛器 is the standard term for the device.
Compound of 脱毛 (hair removal) + 器 (device, instrument).