<p>Since it's a plastic surface mediums made for use with acrylic paints might be your answer.</p>

<p>There are varnishes and glazing mediums specifically made for acrylic painting.</p>

<p>Both mediums start out clear. By tinting the mediums you will have control over the hue and value of the covering layer.</p>

<p>The company Golden caries a line if varnish and glazing medium formulated for acrylic paints.</p>

<p>Example Polymer Varnish
<a href="http://www.goldenpaints.com/technicalinfo_polvar" rel="noreferrer">http://www.goldenpaints.com/technicalinfo_polvar</a></p>

<p>Example Glazing Liquid
<a href="https://www.goldenpaints.com/technicalinfo_glazeliq" rel="noreferrer">https://www.goldenpaints.com/technicalinfo_glazeliq</a></p>

<p>The varnish is removable. The glazing medium is not.</p>

<p>Whichever method you choose to pursue I would do a test coat in a small area before trying to cover the whole canvas.</p>

<p>Or combine this with Ji Ugug idea and apply the medium to the glass (or plexiglass) cover and you won't have to worry about harming your canvas at all.</p>

CC BY-SA 3.0
2017-03-11T21:16:01.393Z
2017-03-11T21:16:01.393Z
John Vukelic
<p>If it has a frame with glass, or you're not against putting it in such a frame, you may paint a layer of glass paint on the glass, instead of working directly on the canvas.<br>
If you ever regret your decision and you want the original art back, no harm is done.</p>

CC BY-SA 3.0
2017-03-11T20:25:35.120Z
2017-03-11T20:25:35.120Z
Ji Ugug
<p>I purchased some wall art and I'd like to darken it with a tea stain or synthetic stain but the canvas has a plastic coating. Any ideas?</p>

<medium-selection><canvas>
Distressing purchased wall art
Arleen
# Distressing purchased wall art

(Asked by: username_0 on 2017-03-11)

I purchased some wall art and I'd like to darken it with a tea stain or synthetic stain but the canvas has a plastic coating. Any ideas?

**Tags:** medium-selection, canvas


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## 2 answers

### Answer by username_1 on 2017-03-11. Score: 5

Since it's a plastic surface mediums made for use with acrylic paints might be your answer.

There are varnishes and glazing mediums specifically made for acrylic painting.

Both mediums start out clear. By tinting the mediums you will have control over the hue and value of the covering layer.

The company Golden caries a line if varnish and glazing medium formulated for acrylic paints.

Example Polymer Varnish
<http://www.goldenpaints.com/technicalinfo_polvar>

Example Glazing Liquid
<https://www.goldenpaints.com/technicalinfo_glazeliq>

The varnish is removable. The glazing medium is not.

Whichever method you choose to pursue I would do a test coat in a small area before trying to cover the whole canvas.

Or combine this with username_2 idea and apply the medium to the glass (or plexiglass) cover and you won't have to worry about harming your canvas at all.


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### Answer by username_2 on 2017-03-11. Score: 4

If it has a frame with glass, or you're not against putting it in such a frame, you may paint a layer of glass paint on the glass, instead of working directly on the canvas.  
If you ever regret your decision and you want the original art back, no harm is done.


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