Darwi Vernis is a varnish for polymer clay and other craft surfaces, made in Belgium. It is hard to get hold of outside Europe, which is why Ginger Davis Allman names us as one of the few US sources for it in her review — we import it directly.

Aerosol. Most spray sealers stay tacky on polymer clay — it is the usual reason people give up on sprays. This one does not. In Ginger Davis Allman’s testing it dried smooth and not at all sticky, which made it a rare success among the sprays she tried. The matte is genuinely flat and the gloss genuinely shiny.

One important limitation. This finish is hard, and hard means inflexible. On anything that bends — cutter earrings, thin slabs, wearables that flex in use — it will crack and flake off. It is the right varnish for beads, sculptures, ornaments and anything rigid, and the wrong one for anything that moves. Worth being clear about before you coat a finished piece.

Test first. Every sealer behaves differently on different clay brands. Varnish a baked scrap of the clay you are actually using and leave it a few days before committing a finished piece.

Shipping note — please read before ordering. This product is classified as a hazardous material by USPS and UPS, so it cannot travel by air. Any order containing it moves by ground carrier, and that applies to the whole box — anything packed alongside it ships ground too. If an order is large enough to need a second box, that box can go by the usual service.

Ground shipping on hazardous materials has sometimes run slower than an ordinary ground shipment. We ship from outside Seattle, so the further east you are, the more time to allow. If you need it by a particular date, please order with room to spare.

Ginger Davis Allman’s Darwi Vernis Spray Varnish on Polymer Clay at The Blue Bottle Tree tests it against the other sprays, most of which stay sticky.

• Finish: Glossy
• Type: Spray
• Size: 400ml