I, too, use a plain old mechanical pencil with #2 lead on light fabrics. I have been using the Bohin white mechanical pencil on light fabrics and really like it alot. No issues with either of these washing out. I hand quilt - usually in a hoop - and generally mark as I go. The #2 pencil doesn't rub off or disappear but the white definitely does if rubbed with fabric or hands. Glad you got the marks to come out.