18 citations
,
June 2016 in “Clinical and Experimental Dermatology” Increasing isoleucine intake improved skin and health issues in an infant with maple syrup urine disease.
1 citations
,
July 2023 in “Plastic and Aesthetic Nursing” Biotin and collagen may improve hair health.
21 citations
,
August 2002 in “British Journal of Ophthalmology” Drug misuse can cause serious eye infections and other severe side effects.
2 citations
,
November 1995 in “American Journal of Obstetrics and Gynecology” Taking vitamin B6 corrected a pregnant woman's metabolic disorder, which changed her hair color.
36 citations
,
October 2008 in “European journal of paediatric neurology” Valproic acid treatment may cause temporary hair loss due to reduced zinc and biotinidase levels, which tend to normalize after 6 months.
17 citations
,
April 2004 in “Acta Clinica Belgica” UV light makes skin signs of lack of carotene and vitamin A more visible.
1 citations
,
April 2015 in “The FASEB journal” UVB exposure increases skin proteins for retinoic acid synthesis and shifts their location, possibly affecting skin repair.
3 citations
,
January 2017 in “Journal of cosmetology & trichology” The food supplement with L-cystine, Serenoa repens extract, and biotin safely reduced hair loss and improved hair growth in men and women.
July 2021 in “PARIPEX INDIAN JOURNAL OF RESEARCH” Knuckle darkening can be an early sign of vitamin B12 deficiency.
33 citations
,
December 1982 in “Developmental Medicine & Child Neurology” Hair-shaft abnormalities can indicate neurological disorders, some of which are treatable.
August 2021 in “Journal of The American Academy of Dermatology” Finasteride treatment changes hormone levels in male pattern baldness patients.
9 citations
,
March 2022 in “Journal of Chemical Information and Modeling” New inhibitors may reduce gut toxicity from cancer drugs.
2 citations
,
November 1961 in “American Journal of Clinical Nutrition” 6 citations
,
October 1980 in “Archives of Dermatology” Vitamin deficiencies, especially biotin and vitamin D, can cause hair loss.
GV-350 improves hair growth and quality of life in iron-deficient women without side effects.
April 2012 in “The Journal of Urology” More prostate biopsies increase the chance of finding cancers that may not need treatment.
January 2024 in “JAAD case reports” MSUD patients need careful monitoring of amino acids and zinc to prevent severe symptoms.
October 2021 in “Interfaces Científicas” Nutricosmetics for hair treatment often contain biotin, pyridoxine, zinc, and other nutrients, but more research and professional guidance are needed for their use.
5 citations
,
January 1994 in “PubMed”
Biotin and silica from plants improve hair, skin, and nail health.
July 2025 in “JAAD Case Reports”
7 citations
,
July 2021 in “Molecules/Molecules online/Molecules annual” The method can measure vitamin B3 levels in human hair accurately.
7 citations
,
July 1979 in “Archives of Dermatology” Patients with renal disease should be cautious with vitamin A supplements due to risk of toxicity.
14 citations
,
December 2003 in “BJUI” Finasteride can treat prostatic haematuria, but its use is controversial.
August 2024 in “Journal of Cosmetic Dermatology” Telogen effluvium is linked to deficiencies in iron, vitamin B12, and thyroid function.
September 2021 in “Crop research/Crop Research” Aluminum foil packaging kept the biotin nutrition bar with the least bacteria after 30 days.
1 citations
,
May 1967 in “Pediatric Research”
14 citations
,
January 2001 in “Clinical chemistry” Hair can be used to measure cancer-related chemicals noninvasively.
36 citations
,
June 2012 in “Alcoholism Clinical and Experimental Research” People with decreased kidney function have higher levels of ethyl glucuronide in their hair.
The conclusion is that hair supplement ingredients may be unsafe and should be disclosed and proven safe before use.