Salts Effect on Paint Pigments

I am an artist. I need to know how salt causes the paint pigments to separate and cause a starburst effect?

Reen from Cherokee, NC

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February 18, 20090 found this helpful

I taught my art students to sprinkle salt on still wet water color painting to make a cool texture. None of us cared how it worked. It was fun, and safe even for kindergarten.

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February 18, 20090 found this helpful

The salt absorbs the paint around its immediate area.

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February 18, 20090 found this helpful

The star burst effect of using salt results in the moisture being soaked up by the salt. I have used this effect on silk painting and water colour. If you use rock salt you get one effect, if you use normal table salt you get a finer effect you can also use epsom salts to create another type of effect. I hope that helps.

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February 19, 20090 found this helpful

I thank you for the responses. I am fully aware that this works - I have done it for many years - what I am looking for is the scientific explanation.

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February 19, 20090 found this helpful

You can check out simple explanation here

http://brushstrokesbykc.blogspot.co ... 1/let-salt-season-your-painting.html or here http://www.pburch.net/dyeing/FAQ/salteffects.shtml

Salt will mix into water. The fine particles spread evenly throughout the water. As the water evaporates, the mixture dries and becomes solid again. Salt forms into crystals as it dries. The crystals are shaped like cubes with flat sides that reflect light causing the sparkle.

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