11 citations
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September 2012 in “Chinese science bulletin/Chinese Science Bulletin” This study found that variations in mineral content of hair, such as increased Zr in asthma and respiratory infections, may be linked to different illnesses, suggesting potential diagnostic use.
2 citations
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January 2019 in “Elsevier eBooks” This review discusses biotin's role in nutrition and suggests no benefit to supplementing it for hair, nails, and skin in healthy individuals; it reports preliminary findings that high dosages may help some multiple sclerosis patients.
1 citations
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January 2010 in “Springer eBooks” Certain micronutrients may improve hair and nail health, but more research is needed to confirm their benefits.
7 citations
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January 2012 in “Dermatology” This study found that internal medicine inpatients had numerous undiagnosed skin conditions, notably age-related ones, and often requested treatment for symptomatic issues like xerosis, indicating a need for proper dermatological care.
January 2019 in “Journal of cosmetology & trichology” In this study, researchers found that supplementation with L-cystine, either alone or with a keratin hydrolysate, significantly improved hair density, hair and nail brightness, and nail growth in women experiencing acute telogen effluvium and brittle nail syndrome over three months.