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www.vsp.com/eyes-burn.html

A VSP eye doctor explains why onions make your eyes burn when you slice and dice them and provides seven ways you can cut onions without getting weepy.

www.loc.gov/rr/scitech/mysteries/onion.html

Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes' lachrymal glands so they release tears. Scientists used to blame ...

lifehacker.com/tested-the-best-tear-free-tricks-for-cutting-onions-476088845

Apr 18, 2013 ... To do this torture experiment, I carefully diced all-purpose yellow onions according ... About ten seconds later, stinging tears joined my burning eyes. ... Verdict: Useless, unless your goal is just to mask the onion smell in your ...

www.leaf.tv/articles/how-to-soothe-eyes-tearing-from-cutting-onions

Lots of tips exist to help you prevent crying caused by cutting onions, ... The fumes waft up toward the small glands in your eyes and cause you to tear in an attempt to flush away the chemical gas. ... If you failed to do that, then treatment is called for. ... How to Stop My Eyes From Tearing & Burning When Wearing Makeup ...

www.thoughtco.com/why-do-onions-make-you-cry-604309

Sep 28, 2017 ... Find out why you cry onions make you cry when you cut them. ... The sulfuric acid burns, stimulating your eyes to release more tears to wash ...

www.sciencedaily.com/releases/2017/06/170620122950.htm

Jun 20, 2017 ... "Chopping onions can cause some burning and irritation and tears," Rosa said. " Other than that, it's pretty safe on your eyes. It's a temporary ...

sciencebob.com/why-do-we-cry-when-we-chop-onions

It turns out when you cut an onion, it releases a gas called, ready for this, Propanethiol ... The next best thing your eyes can do is to make tears to protect the eyes. ... I've heard some have had luck burning a candle near the chopping site.

www.quora.com/Why-do-we-get-tears-when-cutting-onions-How-to-stop-it

What do onions contain? Onions contain amino acid sulfoxides that form sulfenic acids in the ... The sulphuric acid thus produced causes burning sensation in your eyes and this in turn leads to the tear glands secreting tears. Thus you end up ...

www.todayifoundout.com/index.php/2010/11/why-onions-make-your-eyes-water

Nov 5, 2010 ... When this substance, in a gaseous state, comes in contact with the moisture in your eye, it triggers a burning sensation via the ciliary nerve.