9 citations
,
January 2006 in “Cutaneous and ocular toxicology” L-cystine, D-pantothenat, and miliacin together significantly boost keratinocyte growth and metabolism.
15 citations
,
October 1936 in “Archives of Dermatology” Cystine is crucial for forming keratin in hair, wool, and nails.
9 citations
,
September 2018 in “Journal of Photochemistry and Photobiology B-biology” A hair-growth formula with cystine and thiamin helps protect skin cells against UV damage and improves their growth.
February 2026 in “UiTM Institutional Repositories (Universiti Teknologi MARA)” Cis-UCA can form new compounds without enzymes, and sulphide donors reduce its UVB-induced toxicity in skin cells.
5 citations
,
January 2016 in “Genetics and Molecular Research” Researchers found 617 genes that behave differently in cashmere goat hair follicles, which could help understand hair growth.
5 citations
,
January 2022 in “Scientific reports” The research identified two types of keratinocytes in chicken scales: one for hard scales and another for soft skin, with similarities to human skin differentiation.
1 citations
,
January 1996 Cysteine and arginine are essential for hair growth and thickness.
3 citations
,
May 2024 in “Amino Acids” Disrupted cysteine metabolism may cause hair breakage in Alopecia Areata, suggesting potential treatments like N-acetylcysteine.
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.
December 2024 in “The Eurasia Proceedings of Science Technology Engineering and Mathematics” Higher ꝩ-GCS enzyme levels in PCOS patients may play a role in the disease.
4 citations
,
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.
2 citations
,
August 2020 in “Clinical, Cosmetic and Investigational Dermatology” The hair-growth formula with L-cystine helps protect and grow hair cells.
346 citations
,
April 2020 in “Frontiers in Oncology” EMT and metabolic pathways help cancer cells resist treatment and spread.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” The research identified unique metabolic activities in immune cells associated with hair loss in Alopecia Areata.
26 citations
,
January 1983 in “PubMed” Trichothiodystrophy involves brittle hair due to low sulfur amino acids, not a transport defect.
32 citations
,
December 1963 in “Pharmacological Reviews” Some drugs can cause hair loss and skin issues.
January 2009 in “Elsevier eBooks” Some plant-based treatments may help with ovary function, insulin resistance, and excess male hormones in PCOS, but more research is needed to confirm their safety and effectiveness.
9 citations
,
September 2017 in “Journal of Investigative Dermatology Symposium Proceedings” Prostaglandin D2 increases testosterone production in skin cells through a process involving reactive oxygen species, and antioxidants may help treat hair loss.
2 citations
,
January 2012 in “Journal of metabolic syndrome” The document concludes that hirsutism can be managed with various treatments tailored to the individual, potentially improving quality of life.
59 citations
,
May 2017 in “Scientific reports” ZDHHC13 is important for normal liver function and metabolism, affecting mitochondrial activity.
40 citations
,
July 2015 in “Journal of Cellular Biochemistry” Cysteine helps maintain keratin production in skin cells even when iron is low.
1 citations
,
July 2024 in “International Journal of Dermatology Venereology and Leprosy Sciences” Cysteine strengthens hair, and glutamine fuels hair growth.
41 citations
,
March 2007 in “Journal of dermatological science” Taking L-cystine and vitamin B6 can prevent hair loss caused by smoke in mice.
36 citations
,
November 2019 in “Molecular biology and evolution” Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.
9 citations
,
August 2007 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Sheep wool follicles absorb different amino acids at various rates and locations, which could affect wool growth based on diet and genetics.
4 citations
,
October 2022 in “Frontiers in public health” Cadmium chloride pollution can cause skin disorders, speed up aging, and prevent hair growth.
1 citations
,
April 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Climate-related nutritional stress may cause hair loss in juvenile male Guadalupe fur seals.
May 2026 in “Frontiers in Pharmacology” Dendrobium officinale polysaccharide helps hair regrowth in hair loss mice by affecting local steroid metabolism and hair follicle responses.
April 2026 in “bioRxiv (Cold Spring Harbor Laboratory)” Red light exposure can slow aging in mice by improving fat metabolism.
January 2026 in “RSC Advances” Epristeride's metabolism in zebrafish helps improve doping detection methods.