Pigma Micron Pens are fantastic for fabric. I teach fabric painting and use these pens all the time for outlining and fine detail. They are really permanent and I have never had a problem with them. They are great for touching up embroidery designs, especially of you get pesky bobbin thread that sometimes peeks up on the top a bit.

these are great.. I use mine .. sometimes something needs a touch up..

Good to know,thanks for asking!
Hugs, Nadyne

oh and btw I have mine about 7 to 10 years and still in order, write my quilt lables with them and use them on AMCs to touch up good idea to use them in embroidery too.

Yes, I use mine and I've had them for quite a while.

thanks for all your comments, it will certainly save me from redoing some of my embroidery.