Using these high-frequency K-214 tubes is easy. First, make sure your facial machine is turned off. Then, carefully insert the tubes into the designated slots on the machine. Once they're in place, you can turn on the machine and start your facial treatment. When using the tubes, avoid touching them directly with your hands as it may affect their performance. Also, keep the tubes away from moisture and extreme temperatures. To maintain these tubes, clean them gently with a dry cloth after each use. This will help ensure they work well for a long time.
