Use Recommendation It is recommended to use this device for 20-30 minutes, twice a day, in a row of 7-10 days, and please pause 2 days before starting next treatment session.The treatment time might vary depending on your physical condition, and you can apply this device directly onto your skin. During usage, you might feel the heat, it's normal, and if you think it's too hot, please stop using and have a rest. It's non-invasive, painless and has no adverse side effects. It is recommended to drink 250ml of warm water before/after each treatment. Features 100% natural Drug-free Chemical free Non-invasive Non-ablative Painless Safe for all skin types Safe for all ages No adverse short or long term side effects Easily self-administered in your own home Note 1.Please stick the electrode patch first, and then slowly increase the pulse intensity, do not firstly open the high-grade pulse and then stick the electrode patch on the body to avoid suddenly of electric stimulation. 2.The display shows the intensity of the pulse, not the time.