See biographies by H. Cole (1977).
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Beau Brummell, engraving by John Cooke after a portrait miniature, 1844.
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![]()
Beau Brummell, engraving by John Cooke after a portrait miniature, 1844.
Learn more about Brummell, Beau with a free trial on Britannica.com.
Beau's lines should be distinguished from Muehrcke lines of the fingernails. While Beau's lines are actual ridges and indentations in the nail plate, Muehrcke lines are areas of hypopigmentation without palpable ridges.
A researcher found Beau's lines in the fingernails of 6 divers following a deep saturation dive to a pressure equal to 335 meters of sea water, and in 2 of 6 divers following a similar dive to 305 meters.