Products bearing the AP seal of the Art & Creative Materials Institute, Inc. (ACMI) are certified non-toxic. A product can be certified non-toxic only if it contains no materials in sufficient quantities to be toxic or injurious to humans, or to cause acute or chronic health problems.
Holbein Multi Sizing Liquid is an artist-grade sizing liquid used to reduce the absorbency of paper. Dilute it with warm water and apply with a broad brush.