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Devitrification (Devit) Spray and Recipe
Devit spray is used to make your glass shine

Devit is when your glass looks cloudy or scummy. I airbrush Devit spray on all my bottles to get an ultra high sheen. Let it dry before using in a mold

Before you apply devit or fire your bottles, make sure every iota of glue and paper have been removed from the surface, or the glue will leave a residue that will be etched fired into the glass.

Dawn Power DissolverI have found that by spraying the entire surface of the label with Dawn Power Dissolver and letting the dissolver work for about 3 hours, the labels will practically drop off. I go over the surface with a Scotch pad to remove any remaining glue. This is a heck of a lot easier than soaking in water for days on end and still having to use a razor blade to remove the glue

Although commercial sprays for preventing devitrification are widely available under brand names such as Spray "A" or Superspray, it's fairly easy to make your own solution. With the cost of shipping these days, its a heck of a lot cheaper!

There are several recipes for the spray, but here's one that many people have tried. Most find that this recipe works just as well as the commercial sprays. It's also significantly less expensive to make.

To make the spray, you will need Borax (available from ceramic stores or in groceries that carry the 20 Mule Team Borax brand of laundry detergent, either Thompson's Klyr-fire (or a dish washing liquid (such as Dawn), and distilled water.

The ratio of the three ingredients is 1:1:16.
For example, (and using US measurements)

    A large quantity can be made by using:
  • one cup of borax,
  • one cup of Klyr-fire or Dawn dish washing liquid,
  • one gallon of distilled water.


    • A small quantity can be made with
  • one tablespoon borax,
  • one tablespoon Dawn
  • one cup distilled water.

Start by mixing the borax with most of the water. Warm (but not boiling) water is best. Let it settle and cool, then pour the liquid into another clean container. Dispose of the residue.
Next mix the Dawn dish detergent with the remaining water. Add this to the borax/water mixture and mix well.
That's it! To use, just brush liberally on the top surface of the glass prior to firing. A foam brush works well, an airbrush works perfect.
Do not stir the mixture; instead, leave any crystallized borax in the bottom of the container. If needed, wash the brush with distilled water.