Somekind of spot lump or ingrowing hair had taken it's hold on my cheek/chin. I remembered a suction tip had worked on a workmate but I couldn't remember the exact rules. I burnt a match into an upside down pasta sauce jar. I placed it on my spot and it sucked my skin in a bit. I wanted more suction so emptied a vanilla flavouring bottle which was redundant at the back of the cupboard. It was a small neck and the match hovered briefly over the rim. I stuck it on my face. Ouch, I almost branded an already sore patch. My wife was fascinated do she got the original sauce jar and heated it over the hob gas ring and plunged it on to my cheek. Really ouch, this time. I said it might not feel hot to dab your hand on it, but my cheek is different. I eventually received the correct advise. Put boiling water in a bottle for ten minutes and then pour out water and stick to your spot. As it cools your skin is sucked out along with the puss etc. It turned out it wasn't a spot so nothing happened other than putting a circle on my face.