Ladies, I'm still using chalkboard chalk - easy, washes out, inexpensive. Am finding it is perfect for all of the fabrics I have used.

Even used it on an expensive dress I got off of the sale rack (is there any other way to buy????) to mark my hem and it came right out.

Found that the light colors (pink, yellow, blue, green) work good on light fabrics. White on the dark ones.

I think I have found them....what I have found is a White Writer Fine Tip Pen by Wrights...brush tip draws a thin or thick line.marker writes invisibly but appears white as ink dries. Marks disappear with ironing or rinsing..store with cap down....
regular price is $3.98...special $2.98..item number 201016
toll free ordering: 1.800.772.2891
clotilde.com
outside US: 903.636.4094

I will try to get some of these in my stock later on...when I get built up on fabrics and things...