I use dryer sheets, fortunately no one in my family has an allergy. Once I found how great they work to clean the starch off a hot iron I keep them. For a while I was having problem with the starch build up on my iron and it was leaving marks on my clothes. Someone here mentioned they used the dyer sheets to help clean her hot iron, I tried it and it worked like a charm. So now I keep an old tissue box in my sewing room stuffed with dryer sheets. When I start to iron with starch I pull out a dryer sheet and every few minutes I spray the dryer sheet with water, run my hot iron over it a few times and then go back to ironing the shirt or fabric. The dryer sheets haven't melted or caught fire. I haven't tried them for foundations.