12 citations
,
June 2023 in “Journal of trace elements in medicine and biology” Eating too much selenium can cause bad breath, hair loss, and nail changes, with harmful effects starting at low daily doses.
5 citations
,
May 1983 in “Australian journal of biological sciences” Certain amino acid analogues can inhibit wool and hair growth and affect fiber strength.
1 citations
,
December 2019 Selenium is essential for health, but too much or too little can cause problems; blood selenium levels are a good measure of intake.
June 2023 in “Skin Research and Technology” The supplement with amino acids, iron, selenium, and marine hydrolyzed collagen improved hair growth more than drug treatment alone, with most people tolerating it well.
7 citations
,
August 2025 in “Plants” Selenium from plants is beneficial and safer for health.
134 citations
,
December 2018 in “Dermatology and Therapy” Some vitamins and minerals like vitamin D and iron can help with certain types of hair loss, but more research is needed for others.
79 citations
,
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.
70 citations
,
June 2010 in “Clinics in Dermatology” Certain groups may need vitamin supplements to improve hair health and prevent other health problems.
47 citations
,
January 2003 in “American Journal of Clinical Dermatology” Mood stabilizers can cause serious skin reactions; careful monitoring and immediate treatment are crucial.
30 citations
,
September 2016 in “Aging Cell” Low selenium levels can extend lifespan but worsen health issues.
27 citations
,
June 2010 in “Journal of the American Academy of Dermatology” Excessive selenium in supplements can cause hair loss and nail issues.
20 citations
,
January 1990 in “Journal of dermatological treatment” Ketoconazole shampoo treats dandruff and reduces hair greasiness.
14 citations
,
October 2020 in “Natural Products and Bioprospecting” Various treatments, including FDA-approved drugs, natural products, and oral supplements, can help with hair loss, but a patient's medical history and potential allergies should be considered when choosing a treatment.
11 citations
,
January 2016 in “BMC veterinary research” Urinary Se to creatinine ratio, serum Se, and glutathione peroxidase are effective early biomarkers for selenium status in dogs.
9 citations
,
January 2013 Alopecia areata patients have lower zinc, copper, and selenium levels than healthy people.
8 citations
,
January 2017 in “Elsevier eBooks” Certain nutrients can help keep skin healthy as we age.
7 citations
,
January 2017 in “Journal of cosmetology & trichology” Good nutrition is crucial for healthy hair and can help with hair loss without medication.
5 citations
,
July 2019 in “Nutrients” Low selenium intake may delay puberty in boys but not in girls.
4 citations
,
December 2013 in “Acupuncture and related therapies” N-acetyl-cysteine shows promise in treating various diseases and may improve skin and hair conditions, but more research is needed on dosages and long-term effects.
4 citations
,
July 2012 in “Dermatologic Clinics” New biopsy techniques and tools improve alopecia diagnosis, and both too much and too little selenium can cause hair loss.
4 citations
,
January 2009 in “Acta agriculturae Serbica” Selenium imbalance can cause hair loss and skin issues.
4 citations
,
January 2020 in “Frontiers in Physiology” Good feather growth in poultry needs the right balance of proteins, amino acids, minerals, and vitamins.
1 citations
,
August 2022 in “International journal of biological and chemical sciences” Iodine-deficient diets and antithyroid substances affected rat growth and behavior, but most adapted with positive weight gain.
1 citations
,
August 2022 in “Медицинский совет” The treatment with an oral drug and topical lotion is effective and well-tolerated for hair loss after COVID-19.
The conclusion is that hair supplement ingredients may be unsafe and should be disclosed and proven safe before use.
1 citations
,
January 2018 in “Molecular and integrative toxicology” Getting the right amount of selenium is important for health; too little can cause disease, and too much can lead to toxicity.
1 citations
,
December 2015 in “Lʹvìvsʹkij klìnìčnij vìsnik” Correcting trace element imbalances may help reduce alopecia areata symptoms.
November 2025 in “Biological Trace Element Research” Hair mineral analysis doesn't reliably show blood mineral levels but may help track long-term mineral trends.
May 2025 in “Journal of Dermatological Treatment” The shampoo improved seborrheic dermatitis symptoms, but worked better for males than females.
February 2024 in “Animals” Giving selenium yeast to pregnant goats leads to better hair growth and cashmere quality in their babies.