Pulled straight from GTechniq's site
Q: What's the best way to store opened bottles and how long do opened bottles "keep"?
A: The best place to store opened bottles is next to your bottles of Chateau Laffite 1953 (we assume only the best for Gtechniq customers!) - ie at a cool stable temperature, dry and out of direct sunlight. We recommend using up the bottle within 3 months of opening.
Q: Can it be layered/stacked?
A: For optimal results we recommend two layers of EXO. These can be applied one right after the other (but be sure start on the same panel and work in the same sequence). Further layers can be applied but to little extra advantage.
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