Loose skin is a good thing. . . But if it is obviously loose, we should consider the possibility of dehydration. It is recommended that you drink plenty of water every day besides proper strength training. As for wiping things, I personally don't think it is necessary. These astringent things are not good for the skin. In addition, don't stop training at this time, because although the skin is loose, there is still residual fat under these loose skin. Whether you can succeed depends on whether you can persist at this time.