Pébéo's universal anti-UV solvent phase varnish has a satin finish and is transparent and non-yellowing. It significantly reduces the effect of UV light on oil, acrylic, gouache, watercolour, ink and pastel colours. Recommended for protecting illustrations created with water-based Colorex inks.Instructions for use:Apply to dry colours in several thin coats, and test beforehand. Shake can well before use. Spray 20-30 cm from the surface. Dries in approximately 10-15 minutes. Empty the nozzle after use (can upside down).