A 足贴 30 sticker that I have repurchased many times is very intimate and can be used for about a month. I don’t stick it every time, but as long as it is posted on the day, the sleep is very sufficient and very good Tear it off every morning and find that 足贴 has changed from powder to wet, feeling that the nasty moisture in my body has been pulled out, especially refreshing! The only thing to pay attention to is that the feet will be sticky after tearing off 足贴, just rinse it with water a little It seems that this product has no expiration date. I wonder if it is not needed by itself. Friends who have sleep problems may wish to consider trying this. It is a good choice to send parents and elderly people back to China. I wish you all a good dream every day