About Zen, 4920
Zen is a beautiful soft aqua blue-green that adds a tranquil touch to the pastel line-up. Zen is a pastel version of Tonic, and does contain copper. For a copper free version, try Nimbus.
Working Tip: Work neutral to oxidizing for best results. A reducing flame will cause REDuction. While this color can be worked without encasement, for longer working times, we recommend a thin sleeve of clear. Be sure not to get this color too hot when in a thin application as to not cook out the pastel base and turn it translucent. Blow outs work best of the pastel colors.