The strips are individually packed and can even be "portioned". As for guidance, I moistened the face and left the strip for 10 minutes on it. At the first time it worked very well and there were visible blackheads removed (this hung like small icicles on the strip, disgusting but good). Unfortunately, however, only partially in the middle of the strip. In the following applications the cleaning was but far less thorough or has not done. I do not know what it is, but in most cases it does not bring much. The price is ok, so you can not really go wrong, but in the end it was not worth it for me. Going to a professional is probably the better investment.
