This Review Title is Test it first!! and the content is: I stuck one to my shoulder overnight to test, when I took it off in the morning the adhesive left a red circle on my not especially sensitive skin that is still visible 12 hours later. I can't comment on the effectiveness, but I'm glad I didn't stick it on my face!.There are other information for this review, one is This reviewer did purchase it and the other is 0 people think this review is helpful.