In the late 19th century, German scientists discovered that an - TopicsExpress

Donald Yipshun Hsu

In the late 19th century, German scientists discovered that an easy-to-make acid could rather neatly peel off a layer of skin cells. They promptly marketed it for “skin rejuvenation.” Today, that compound, trichloroacetic acid, or TCA, is widely used by dermatologists both to brighten up aging faces and to remove damaged skin cells, including precancerous ones.More than one million people received chemical peelsfrom dermatologists in 2012, according to the American Society of Plastic Surgeons. The procedures can be performed with a variety of acids, but TCA is especially popular because it can reduce sun damage, pigment spots and acne scars. TCA is so popular, in fact, that it is sold in do-it-yourself formulas at pharmacy chains like Walgreens and online retailers like Amazon.But a growing number of studies, mostly in laboratory animals, have suggested that TCA has troubling, more destructive effects. Recently the International Agency on Cancer Research moved to classify it as a suspected human carcinogen, and in July, the state of California followed suit, announcing its intent to add TCA to the state registry of toxic substances. Researchers have been taking a hard look at TCA’s safety both for patients and practitioners. - NYTimes

Posted on: Fri, 25 Oct 2013 10:53:57 +0000

In the late 19th century, German scientists discovered that an - TopicsExpress

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