September 1941 in “The Science News-Letter” February 1945 in “New England Journal of Medicine” 2 citations
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March 1942 in “JAMA” This article examines the subject of gray hair, questioning its meaning and how vitamins or chemicals might affect it, but provides no new experimental findings.
2 citations
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January 2023 in “International journal of biological sciences” This review discusses the mechanisms of hair repigmentation and reports no clinical results; the authors suggest further research into topical treatments for reversing gray hair.
June 2025 in “Clinical Cosmetic and Investigational Dermatology” This study examined the factors contributing to gray hair, such as genetics and lifestyle, and found that while graying correlates with some health conditions, it is primarily a physiological process rather than a pathological one.