4 citations
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December 2008 in “The Thai Journal of Veterinary Medicine” This study found that zinc methionylglycinate supplementation improved haircoat characteristics and zinc absorption in dogs compared to zinc sulfate.
This study found that supplementing dog food with zinc methionyl glycinate at 160 ppm improved hair growth rate, zinc levels in plasma and hair, and hair condition more than lower doses or sulfate form.
18 citations
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January 1987 in “PubMed” This study found that plasma zinc concentrations were significantly lower in patients with alcoholic cirrhosis, especially those with skin manifestations of zinc deficiency, compared to control subjects.
5 citations
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May 2020 in “Diagnostics” This study involving male patients with androgenic alopecia found that a higher baseline zinc plasma level, specifically above 10 µmol/L, may predict the success of treatment with 5% topical minoxidil, correlating with increased hair density and diameter in the parietal area.
June 2026 in “Journal of Cosmetic Dermatology” This study found that patients with frontal fibrosing alopecia had higher hair shaft concentrations of titanium, zinc, aluminum, and iron, possibly linked to the use of metal-containing products.
