Cernit Varnish is a waterproof varnish developed especially for use on Cernit polymer clay. This water-based varnish is dries totally clear and prevents damage from hits or scratches. If item gets wet, the varnish can turn cloudy but will be clear again once dry. Apply one or more coats very thinly. For best results, wipe with alcohol ink to clean the surface where possible. Bake for 10 minutes to harden the varnish.