It took me a little practice to get the hang of using this tape but now that I’ve done a couple pair of pants, it’s a real help for me. It does seem to work more easily on polyester than on denim but I’ve been able to hem both types. I’m a blind single dad with a 9 year old boy and I find myself constantly in need of hemmed pants. This is how I do it: I wash the pants, turn them inside out and roll them to the length I want. I then set a reverse seam with a hot steam iron. I use full steam so I don’t melt the polyester pants my son wears but I do keep the iron close to max setting. I have found that placing the tape at the very top edge of the material keeps it from coming undone when legs are stuck into the pants. I just measure the tape off the roll and tear it off with my fingers, place it carefully as flat and smooth as I can and then adjust the pants material to make sure it’s lined up and smooth for ironing. I use the iron on high heat with full steam setting and place it on half of the taped area, pressing down hard and pushing the steam button a couple times. I hold it there for a slow count of 20 and then pick it straight up and move to the other half and repeat. I then burn my fingers checking the first half since I’m too impatient to wait for it to cool down and make sure that all the tape has been melted. I do this for both sides of each leg so a total of four strips are used for a pair of pants. In my experience, using steam during the pressing makes the tape melt better without scorching the clothes. So far, the taped pants have gone through about five wash and dry cycles on regular wash mode and are holding up well. Even blind, I can hem a pair of pants in about ten minutes. I’m an old US Marine so I don’t mind a little pain and my son doesn’t wear out the cuffs on new pants by walking on them. Make sure you measure and place the tape carefully as undoing it is a real chore for me. Although I was able to tear it off without destroying the clothes, I haven’t been able to get the residue off the spot where I first experimented. One more thing, there is a really long cellophane lead on the hemming tape roll, so long that I first thought it was the tape itself. You can iron this all you want and it will not stick even a little bit to clothes. It will, however, eventually burn onto the bottom of your brand new teflon coated iron so make sure you unravel to the actual hem tape. This is probably not an issue for anyone who can actually see the product though.