I got a zip patch on the back of my back and the front of my face, and the effect on the back of my back really made me nauseous. I had a dog pad on that day, and sanitary pads couldn't handle it, so I just took it off and lay down on a dog pad. I thought I'd live with it the next day because the solution wouldn't come out. To be honest, it was hard because it was swollen and painful, but I needed stitches. I really hate taking care of it, so I used a zipper instead of a lipstick, and I don't regret it. I really like it. The bruises only last for a week, and the major swelling seems to last about a week to ten days. I'll do it again next month on the back of the face. I guess it was biobond, but there was a lump that formed, but it's all gone now . It may have been helpful to buy a low-frequency massager from Coupang and use it every day haha.