49 citations
,
  January 1991   in “Food and chemical toxicology”    Different zinc compounds cause varying levels of skin irritation in animals.  
     
           9 citations
,
  March 2022   in “Antioxidants”    Synthetic antioxidants are effective, cheap, and stable, with some like zinc and cholecalciferol reducing child and cancer deaths, but the safety of additives like BHA, BHT, TBHQ, and PEG needs more research.  
     
           65 citations
,
  January 2009   in “Annals of Dermatology”    Zinc supplements increased zinc levels in some hair loss patients but didn't significantly improve hair growth.  
     
           2 citations
,
  July 2019   in “Journal of psychology & clinical psychiatry”    Zinc helps reduce the severity of depression.  
     
           27 citations
,
  March 2012   in “Dermatologic Therapy”    Taking zinc supplements can help improve or cure hair loss caused by zinc deficiency.