Note: This product is not for medical purposes. keep it clean and avoid scratching. Use disinfectant alcohol or the cotton cloth for cleaning, it may be heated or boiled in water. Instructions: Suck on the part you want to do (acupuncture point), press 2-3 times with your fingers in the vertical direction, the recessed part in the middle makes the gas inside the cupping naturally adsorb. After using it for a period of time, press 2~3 times to adjust the suction strength, so that you can bear it and feel comfortable. If you want a strong adsorption force, absorb several at the same place, or press several times. When resting, driving, going to work, doing housework, or studying, it can be used anytime and anywhere, simple and easy. Each use time is about 5-10 minutes.