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http://www.newscientist.com/article...e-protective-effect-on-skin.html#.UpylzqdFDIU
So suggests a discovery that highly diluted household bleach inhibits inflammation in the skin, a finding that might help protect skin from sun exposure, radiation therapy and even the natural ageing process.
Don't try it at home, but doctors have known for decades that bathing in diluted bleach helps alleviate severe eczema. "But no one really knew why," says Thomas Leung, a dermatologist at Stanford University in California. Many thought the antimicrobial properties of bleach kept the skin clean, and therefore less irritated.
"But we weren't fully convinced – the solution doctors use is so dilute that it isn't fully antiseptic," Leung says. The typical concentration used, just 0.005 per cent, is weaker than the amount you would find in swimming pool water.
Leung suspected that bleach might also be involved in stemming inflammation. An inflammatory response is vital for fighting infection but can cause damage when it spirals out of control – as it does in eczema.