Protect your work from dust, dirt and other external influences with Amsterdam acrylic varnishes. These varnishes provide a durable, flexible, reversible and non-yellowing seal to not only acrylic paintings, but oil paintings as well! Before you varnish, take the following into account: Ensure the varnish and your painting are at room temperature during application and drying. If they are not, a white cast may appear on your work, since changes in temperature can cause condensation under the layer of varnish. If you use the matt or satin varnish from a bottle, shake very well before use. Apply the varnish in one direction using a brush to make sure you achieve a beautifully even surface. Make sure to apply varnish from a bottle in a single layer only. Multiple layers may cause inconsistencies in sheen. Amsterdam acrylic varnish: Apply when paint film has dried completely (4 to 5 days with normal film thickness) Shake well before use Apply with a brush in one layer and in one direction Dries in a few hours Does not yellow Can be thinned with white spirit Clean brushes with white spirit Dry varnish layers can be removed with white spirit