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January 2015 in “Dermatology Online Journal” Smoking can cause yellowing of upper lip hair.
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October 2021 in “Cureus” Smoking can cause yellow discoloration of upper lip hair and nails.
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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.
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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.
January 2017 in “Springer eBooks” The document explains various skin conditions and their treatments.