Jennifer McGuire has a you tube video called Zig Clean Color Real Brush Pens- Q & A. She talks about storage at 16:45 in the video. She says the company says it does not matter if you store them horizontally or vertically. Here is the link to her video:
https://www.youtube.com/watch?v=gHIgxGCzQlQ
By: nolimitskj
(17-Jul-16)
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