Couture Creations Yupo Alcohol Ink Paper White A4. YUPO is the recyclable, waterproof, tree-free Synthetic Paper. YUPO is the recyclable, waterproof, tree-free Synthetic Paper . Yupo Paper is a speciality paper ideal for inks, watercolours and acrylics. This pack contains 10 sheets of white ultra-smooth finish and is a sturdy 200gsm weight so won’t buckle or warp. The acid-free formulation of the paper means it won’t tarnish or discolour over time and won’t alter the colour or integrity of the medium you apply. Suitable for alcohol/spirit based inks, watercolours, and acrylics.