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Old 01-27-2020, 04:09 PM
Richard P Richard P is offline
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Drying shift when using white

I'm just trying Gouache for the first time and I'm finding that when I use Titanium White (instead of water as I would for watercolours), I'm seeing a massive lightening effect when I dampen dried gouache on my painting (that contains white) in order to blend. This makes it nearly impossible to blend the colours I want and to see if the effect is correct.

Is the effect the same if I used Zinc White?

Anything else I can do to reduce this effect?

Thanks,
Richard
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Old 01-28-2020, 03:50 AM
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Yorky Yorky is online now
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Re: Drying shift when using white

Different manufacturers white gouache vary a lot. There is a thread somewhere comparing them. I'll do a search.

I use W&N permanent white and sometimes a Pocca white marker pen for a highlight.

PS here's a video
https://youtu.be/CgV322aoCFs

Doug
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Old 01-28-2020, 07:10 AM
ntl ntl is offline
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Re: Drying shift when using white

from the video description: "Opaque white options for use with watercolor are numerous with advantages and disadvantages for each".
Does using other than standard (transparent) watercolor paint make the addition of another water-based medium a "mixed media" work?

ie, I have a simple beach scene (from a kid's coloring book) that I did in Pang WC, but I forgot to leave white strips for surf. So if I add white --either gouache, acrylic, or casein, does that make my piece mixed media, or is it still a watercolor?
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Old 01-28-2020, 07:36 AM
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Re: Drying shift when using white

Gouache would be fine, it's rewettable.

Doug
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Old 01-29-2020, 04:32 PM
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Trikist Trikist is online now
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Re: Drying shift when using white

I tried Chinese White (I think Zinc) with watercolors and could not make it work for me. I agree that there can be a value change when using white gouache (with watercolors or even other tubes of gouache). I have had mixed luck but I think I would stick with the titanium gouache and see if you can anticipate the value shift. Gary
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