1 citations
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July 2022 in “Clinical and Experimental Dermatology” Amino acid supplements may not be necessary for all women with chronic hair loss.
August 2022 in “Clinical and Experimental Dermatology” Amino acid supplements may not be necessary for all women with chronic hair loss.
15 citations
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January 1981 in “Neonatology” Amino acid levels in milk increase with protein and align with key growth stages in Macropus eugenii.
August 2025 in “Frontiers in Nutrition” Leucine levels may affect hair loss after bariatric surgery.
4 citations
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December 1989 in “The Journal of Dermatology” Human hair proteins have similar cysteine and glycine levels to skin proteins.
February 2025 in “Animals” Amino acid-complexed trace minerals improve hair quality and activity in senior dogs.
10 citations
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October 2016 in “Journal of Biomolecular NMR” Solid-state NMR can effectively study keratin structure and treatment effects in fur.
January 2011 in “Yearbook of Dermatology and Dermatologic Surgery” Hair relaxers are linked to reduced cystine levels and potential hair damage.
November 2025 in “JDDG Journal der Deutschen Dermatologischen Gesellschaft” Restoring phenylalanine levels improved skin and hair symptoms in a PKU infant.
10 citations
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January 2010 in “PubMed” Adjuvants, diet changes, and laser therapy may improve male pattern hair loss.
October 2022 in “JAAD case reports” A man with itchy skin lesions and weight loss was diagnosed with a rare skin condition linked to a pancreatic tumor.
15 citations
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October 1970 in “Archives of disease in childhood” Hair amino acid levels can indicate metabolic disorders.
18 citations
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October 2022 in “JCI Insight” Abnormal amino acid metabolism may worsen rosacea symptoms.
29 citations
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July 1996 in “Acta Paediatrica” Biotin should be added to Japanese amino acid formula to prevent deficiency.
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August 1984 in “Genetics Research” The N gene affects the protein makeup of mouse hair.
43 citations
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April 2005 in “The Journal of Dermatology” Biotin supplements improved skin and hair in a biotin-deficient infant on amino acid formula.
18 citations
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January 1978 in “Advances in experimental medicine and biology” Hair cystine levels may indicate protein malnutrition, but more research is needed.
February 2025 in “Clinical Cosmetic and Investigational Dermatology” Higher fasting insulin levels increase the risk of androgenetic alopecia.
January 2021 in “Research Square (Research Square)” Women with PCOS have different levels of certain metabolites in their blood, which could help diagnose and predict the condition.
71 citations
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January 2014 in “Journal of Proteome Research” Women with PCOS have different levels of certain fats and proteins in their blood, which could help diagnose the condition.
4 citations
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January 1976 in “Archives of Dermatological Research” Metabolic disorders can cause hair structure defects and growth issues, but amino acid levels in hair remain normal.
24 citations
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April 2016 in “Experimental Dermatology” Chemical treatments like dyeing, perming, and bleaching damage hair by altering amino acids and lipids.
August 2023 in “Dermatology reports” A baby with maple syrup urine disease improved from skin problems by adjusting his diet to correct amino acid levels.
17 citations
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September 2000 in “Journal of dermatology” A baby with a rare metabolic disorder developed a rash not cured by zinc alone, likely due to both zinc and amino acid deficiencies.
9 citations
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January 1959 in “The journal of nutrition/The Journal of nutrition” Higher potassium intake may protect against hair loss and liver fat in lysine-deficient rats.
2 citations
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November 1995 in “American Journal of Obstetrics and Gynecology” Taking vitamin B6 corrected a pregnant woman's metabolic disorder, which changed her hair color.
1 citations
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July 2017 in “Microbial Cell Factories” Adding soybean oil to Nonomuraea dietziae increases production of a beneficial compound by improving metabolism and enzyme systems.
To repair damaged hair, use products with proteins, lipids, and moisture like keratin, citric acid, and oils.
November 2025 in “Advanced Science” A new nanozyme using EGCG and L-arginine boosts hair growth by safely increasing beneficial oxidative stress.
March 2016 in “The Korean Society of Beauty and Art” MSG-based hair hardener improves hair thickness, strength, and wave retention after perms.