41 citations,
March 2007 in “Journal of dermatological science” Taking L-cystine and vitamin B6 can prevent hair loss caused by smoke in mice.
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.
9 citations,
January 2006 in “Cutaneous and ocular toxicology” L-cystine, D-pantothenat, and miliacin together significantly boost keratinocyte growth and metabolism.
9 citations,
June 1947 in “Analytical Chemistry” Cold waving solutions quickly reduce cystine to cysteine in hair.
7 citations,
January 1982 in “Acta agriculturae Scandinavica” Mink use L-methionine and L-cystine slightly better than natural amino acids for hair growth, but D-methionine is not effective.
4 citations,
April 1955 in “Textile Research Journal” The effectiveness of reducing agents on hair fibers depends on their electrode potentials.
Prussian Blue causes hair cuticles to detach, weakening the hair.
11 citations,
June 2012 in “Archives of Dermatological Research” L-cystine and vitamin B6 at high doses prevented hair loss in mice treated with a chemotherapy drug.
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.
2 citations,
August 2020 in “Clinical, Cosmetic and Investigational Dermatology” The hair-growth formula with L-cystine helps protect and grow hair cells.
September 2024 in “Journal of the American Academy of Dermatology” The supplements improved hair density and reduced hair loss.
July 2024 in “Skin Appendage Disorders” The supplement significantly improves hair density and appearance in people with hair loss.
June 2023 in “Italian journal of dermatology and venereology” The oral supplement improved hair loss in patients with telogen effluvium.
January 2019 in “Journal of cosmetology & trichology” L-Cystine and L-Cystine with Kera-Diet® safely improved hair and nail quality in healthy women.
6 citations,
January 1998 in “Journal of applied cosmetology” January 2007 in “Leather Science and Engineering” 1 citations,
January 1971 in “Acta dermato-venereologica” Mice hair follicles take in the amino acid cystine.
4 citations,
December 1962 in “European journal of endocrinology” Alloxan diabetes, methylthiouracil, cortisone, and adrenaline affect how white mice hair follicles use glucose and cystine and their cell division.
191 citations,
November 1959 in “Annals of the New York Academy of Sciences” Hair and wool have complex microscopic structures with microfibrils and varying cystine content.
9 citations,
October 1946 in “Experimental biology and medicine” Rats fed soybean oil meal lost hair, but adding inositol, biotin, cystine, or methionine to their diet prevented this and improved growth.
January 2011 in “Yearbook of Dermatology and Dermatologic Surgery” Hair relaxers are linked to reduced cystine levels and potential hair damage.
The combination of millet seed extract, L-cystine, and calcium pantothenate significantly improved hair growth in women with female pattern hair loss.
18 citations,
January 1978 in “Advances in experimental medicine and biology” Hair cystine levels may indicate protein malnutrition, but more research is needed.
Millet extract, wheat germ oil, L-cystine, and calcium pantothenate reduced hair loss and improved hair growth in women with diffuse alopecia.
49 citations,
September 2004 in “Journal of the European Academy of Dermatology and Venereology” Careful light microscopy is crucial for detecting mild cases of pili annulati, which weakens hair and varies widely in expression.
30 citations,
January 2009 in “The scientific world journal/TheScientificWorldjournal” Hair is hard to dissolve because of its complex proteins, but certain solvents that break specific bonds and hydrate can do it.
30 citations,
September 2018 in “International Journal of Cosmetic Science” Bleaching hair causes severe structural and chemical damage, including protein loss and oxidation.
28 citations,
September 1986 in “Pediatric dermatology” Zinc therapy improved hair health in a girl with acrodermatitis enteropathica.
26 citations,
September 1990 in “Ophthalmology” The study found no common cause for a girl's crystalline cataract and uncombable hair, suggesting their co-occurrence might be coincidental.