We now have also contacted Arches and questioned if acrylics may be used over the Oil Paper, which they explained must be fine. If you have other fears or questions on adhesion of GOLDEN High Movement Acrylics, Be at liberty to Get hold of us at [email protected] or at 800-959-6543. http://paintingsonpaper53208.ka-blogs.com/18201221/top-guidelines-of-artwork