4 citations
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January 2015 in “Dermatology Online Journal” Smoking can cause yellowing of upper lip hair.
3 citations
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October 2021 in “Cureus” Smoking can cause yellow discoloration of upper lip hair and nails.
4 citations
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January 2016 in “Dermatology online journal” Using bacitracin zinc and selenium sulfide one after the other can temporarily turn white hair yellow.
September 2025 in “BioMed” Improved oral hygiene and dietary changes can help manage black hairy tongue syndrome.
2 citations
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October 2000 The investigation found no work-related causes for employee hair loss at Equifax Payment Services, and the environment was not hazardous.