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Don't ruin your acid-free paper by using tap water, use bottled water for everything, including cleaning your brushes (valid for every water-based technic like acrylic, tempera, guache...).


By "bottled water" do you happen to mean "distilled water"?


pellegrino


No, just mineral water.


Isn't most bottled water essentially the same as tap water? What is the problem with tap water that needs to be avoided?


This really depends on where you live. Consider yourself lucky if it is the same.


Bottled water typically doesn't have chlorine, through I'm not sure what that does to water-coloring.


or floride -- oh crap, actually, i'm wrong. lots of bottled water has floride.

https://fluoridealert.org/content/bottled-water/


what does fluoride do to watercolors?


It turns it into Communist propaganda, Mandrake.


And impurifies our precious bodily fluids.




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