Kroko mermaid belly stickers are not very expensive, and most people can accept them. This is also one of its advantages. It looks a bit like a big band-aid, and then there are some granular black substances in the middle. You can smell a strong smell of traditional Chinese medicine after opening it. After being attached to the navel, these black substances will gradually turn white with the body temperature. I feel that the navel patch has temperature, but it is not as magical as advertised, and the temperature cannot be transmitted to the body through the navel.
I used it once or twice, but I didn't use it again, because there were some pimples around my navel after I used it again, which was very itchy, so I advised people with sensitive skin not to use it either. Some people may think that I am useless because I use it less and have more useful times around me, but I don't see any effect. There are also many acupoints around my navel. Blindly sticking some ointment with unknown composition may also have some effects on our health.
However, some people's reactions are effective, but I think it may also be psychological. In short, I personally think that if you want to lose weight, you'd better eat reasonably and exercise properly, so that you can lose weight more healthily.