# Just how sensitive is nicotine to sunlight?

**URL:** <https://boards.straightdope.com/t/just-how-sensitive-is-nicotine-to-sunlight/718939>\
**Category:** Factual Questions\
**Created:** [May 1, 2015, 12:38am UTC](https://boards.straightdope.com/t/just-how-sensitive-is-nicotine-to-sunlight/718939 "2015-05-01T00:38:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![grude](https://avatars.discourse-cdn.com/v4/letter/g/e47774/32.png) [@grude](https://boards.straightdope.com/u/grude)\
**Post date:** [May 1, 2015, 12:38am UTC](https://boards.straightdope.com/t/just-how-sensitive-is-nicotine-to-sunlight/718939/1 "2015-05-01T00:38:58Z")

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Apparently nicotine is very sensitive to being degraded by sunlight(UV) so you’ll see warnings on bottles of ecig liquid to keep it in a dark place.

BUT the trend for tanks on ecigs is towards more clear glass, most tanks now totally expose the liquid to light. This is pretty annoying in a mild climate because year round half the time you use it you’re exposing it to sunlight.

Just how sensitive is nicotine? Should I paint most of the tanks with black nail polish or something?