Abstract: A handpiece of a skin care device is disclosed. The handpiece includes a body part having an attaching and detaching hole provided on one side thereof, a solution introducing part linked with the attaching and detaching hole, an air discharging part, and a disposable tip module mounted onto the attaching and detaching hole of the body part. The tip module includes a cylinder body detachably mounted onto the attaching and detaching hole, and an inner cylinder configured to have a hollow inside and installed in the cylinder body. The hollow inside of the inner cylinder is linked with the solution introducing part and is configured as a solution injection flow channel in which a solution introduced from the solution introducing part flows when the tip module is mounted onto the attaching and detaching hole.

Abstract: The objective of the present invention is to provide a handpiece of a skin care device that injects a solution into skin using a tip module making contact with the skin and simultaneously absorbs ambient air and a substance, such as waste products exiting from the skin, etc., thereby achieving an effect of cleaning or improving the skin using the solution without a needle causing pain, a scar, etc. In addition, the objective of the present invention is to provide a handpiece of a skin care device that rotates a tip module making contact with a skin and allows a solution to be stably injected through the rotating tip module in order to more effectively inject the solution into the skin and further increase a skin improvement effect.