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I have used Metallic and I am getting a chalky substance whenever I touch the object. Why is this?
I have used the Metallic Sealer and it has really dulled the color. Why is this?
This is just the Metallic pigment, and should go within a few days.
Metallic Paint is made from tiny reflective particles. These particles reflect the light giving the highly Metallic finish. Anything that covers these particles - such as a Sealer - will stop as much light being reflected. This results in a duller finish.
When using the Metallic Sealer, only a very fine mist is required.