This environmentally-friendly, water-based spray varnish will give the same results as traditional spray varnishes. UV-resistant and acid-free, it dries to a gloss finish and will not yellow or discolour. Suitable for the protection of oil and acrylic paintings. - Painting must be dust-free and dry to the touch before application. - Allow acrylic paint to dry for at least 48 hours before application. Spray two even layers at intervals of at least 12 hours. - Allow oil paint to dry for at least 6-12 months before application. Spray two thin layers at intervals of at least 12 hours.