| 摘要 |
According to an embodiment of the present invention, a cosmetic tool includes: a container which receives a drug input through an input/output unit and has the input/output unit formed thereon; a needle header which has one or more rollers installed on a rotation shaft and a needle formed on the rollers to press the human skin; a needle header holder which is connected to the needle holder to be rotated and is detachably coupled to the container; and a one-way valve which is arranged on the input/output unit or the needle header holder to pass the drug in the container in a first direction toward the needle header to prevent the drug from flowing to the opposite direction of the first direction. Accordingly, the tool can simplify the user′s operation of injecting the drug while minimizing the permeation of foreign matter and bacteria into the drug in the container. |
