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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.

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.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 ...

www.scientificamerican.com/article/what-is-the-chemical-proc

Peeling, cutting or crushing an onion's tissue releases enzymes called ... Incidentally, sulfenic acid in garlic takes a different chemical route, sparing the eyes. ... the central nervous system interprets as a burning sensation--in proportion to the ... But do not forgo the sensory pleasure and healthful effects of Allium cepa." ...

www.wikihow.com/Chop-Onions-Without-Tears

Why do onions make you cry, and how can you prevent it from happening? ... it will neutralize whatever it is that makes your eyes burn from cutting the onions.

www.thedailymeal.com/cook/10-proven-ways-cut-onion-without-crying

Jan 30, 2015 ... We put 12 popular onion-cutting methods to the test — and 10 of them worked. ... safe options, cutting an onion under water will prevent the sulfuric compounds from reaching your eyes and causing you to tear. ... how to do it ...

www.pbs.org/newshour/rundown/why-do-onions-make-us-cry

Feb 22, 2011 ... This gas wafts up from the onion and reacts with the natural water in your eye to form sulfuric acid, which brings about the familiar stinging ...

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.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.