It works really great on fabrics..but again, read directions and use caution....now, for my dirty secret...this is the most fantastic product for when I need an extra inch on my pants' waist...spray up close on both sides of the waist...wait a moment or two and start pulling the fabric around the whole waistband...I have a very solid foot board bed post that i use to stretch.....the fiber does loosen up and I usually get an extra inch or so on my waistband....I basically have an apple shape but hate the muffin tops (extra fat...lol) that hang over...this usually takes care of the extra inch or so.... ... View related article.