Craft My Life’s home made rock painting sealant, can be applied to most surfaces. Its child friendly, easy to clean up spills too! It comes in a 250ml screw cap bottle. spply it to a small sponge and dab it onto the rock or paint it on with a small paint brush. For best results apply very lightly, allow to dry for 30 min, then reapply another light layer, repeat again a further more two times. Allow to dry overnight.