38 citations
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May 2000 in “Livestock production science” Giving high-quality protein or methionine supplements helps improve hair growth in Angora goats and, to a lesser extent, in Cashmere goats.
14 citations
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January 2020 in “Dermatology Online Journal” Some dietary supplements, like vitamins B6/B12, iodine, whey protein, and muscle-building products, can cause or worsen acne.
79 citations
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January 2017 in “Dermatology practical & conceptual” Correcting nutrient deficiencies may help with hair loss, but the benefits of supplements without a deficiency are uncertain and could be harmful.
138 citations
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July 2015 in “Clinical, Cosmetic and Investigational Dermatology” Eating less sugar, milk, and saturated fats and more vegetables and fish may help treat and prevent acne.
2 citations
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January 2019 in “Elsevier eBooks” Some supplements may help with hair loss, but there's not enough strong evidence to recommend them without doctor advice.