# Blue LED lips

**URL:** <https://boards.straightdope.com/t/blue-led-lips/976096>\
**Category:** Factual Questions\
**Created:** [December 6, 2022, 4:05pm UTC](https://boards.straightdope.com/t/blue-led-lips/976096 "2022-12-06T16:05:25Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Johnny\_L.A](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/johnny_l.a/32/1084_2.png) [@Johnny\_L.A](https://boards.straightdope.com/u/Johnny_L.A)\
**Post date:** [December 6, 2022, 4:05pm UTC](https://boards.straightdope.com/t/blue-led-lips/976096/1 "2022-12-06T16:05:25Z")

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There was a vehicle behind me for miles this morning (like Everett to about North Seattle). The driver appeared to have blue LED lips. Eventually, she changed lanes and I could see that she had a blue, light-emitting device in her mouth, with a cord hanging down. Any idea what this thing was? My WAG is it might have been some sort of teeth-whitening device.

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**Author:** ![Cervaise](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cervaise/32/16693_2.png) [@Cervaise](https://boards.straightdope.com/u/Cervaise)\
**Post date:** [December 6, 2022, 4:10pm UTC](https://boards.straightdope.com/t/blue-led-lips/976096/2 "2022-12-06T16:10:10Z")

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Like this?

[![](https://i.ebayimg.com/images/g/dVoAAOSw4f5YCGk3/s-l300.jpg) ](https://i.ebayimg.com/images/g/dVoAAOSw4f5YCGk3/s-l300.jpg)

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**Author:** ![Johnny\_L.A](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/johnny_l.a/32/1084_2.png) [@Johnny\_L.A](https://boards.straightdope.com/u/Johnny_L.A)\
**Post date:** [December 6, 2022, 4:53pm UTC](https://boards.straightdope.com/t/blue-led-lips/976096/3 "2022-12-06T16:53:30Z")

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Could have been. I could only get a glimpse, as there was traffic.

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**Author:** ![md-2000](https://avatars.discourse-cdn.com/v4/letter/m/9d8465/32.png) [@md-2000](https://boards.straightdope.com/u/md-2000)\
**Post date:** [December 6, 2022, 5:53pm UTC](https://boards.straightdope.com/t/blue-led-lips/976096/4 "2022-12-06T17:53:34Z")

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Either that or she had fluorescent blue lipstick and a black light.

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**Author:** ![Lare](https://avatars.discourse-cdn.com/v4/letter/l/53a042/32.png) [@Lare](https://boards.straightdope.com/u/Lare)\
**Post date:** [December 24, 2022, 10:18pm UTC](https://boards.straightdope.com/t/blue-led-lips/976096/5 "2022-12-24T22:18:13Z")

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Or has discovered bioluminescent cyanosis.

I came in to suggest the device pictured above, but was too late so I coined a new term that I now expect to get a grant to study.