I think we should point out that you should try each of these on scraps before marking on your top! Some of the blue pens will be permanent if heated, so will come back when laundering, etc. So, try your samples out, then do everything you will do to it from now on, wash, dry, hang on the line, iro, whatever, just be sure it will come out and stay gone. I have to say I did not know some of the blue pens would come back until this summer. I was very lucky NOT to have used one of those in the past because Iloved the blue ones! Right now, I am using the white Clover pen, until someone tells me different!