December 2020 in “Journal of Aesthetic Nursing” Injecting platelet-rich plasma into the scalp stimulates hair growth, increases hair density, and treats hair loss effectively with minimal side effects.
October 2020 in “Journal of Aesthetic Nursing” Platelet-rich plasma (PRP) injections effectively treat hair loss and thinning in both men and women, with high satisfaction and no major side effects.
93 citations,
February 2015 in “Journal of Investigative Dermatology” Oxidative stress affects hair loss in men with androgenetic alopecia.
72 citations,
July 2003 in “Journal of cosmetic dermatology” Frequent hair coloring and styling can damage hair and cause breakage or loss.
19 citations,
September 2004 in “Reviews in gynaecological practice” Effective hirsutism management requires identifying the cause, combining new and traditional treatments, and setting realistic expectations for patients.
13 citations,
May 2016 in “International journal of biological macromolecules” Keratin's mechanical properties are influenced by hydrogen bonds and secondary structure, and can be improved with the SPD-2 peptide.
January 2024 in “Uttar Pradesh journal of zoology” Chemical treatments severely damage hair cuticles, especially in previously treated hair.
19 citations,
July 1994 in “Journal of Dermatological Science” Human hair keratin genes are similar to mouse genes and are specifically expressed in hair follicles.
50 citations,
March 2001 in “Clinics in dermatology” Human hair is complex and grows in cycles starting from embryonic life.
10 citations,
November 2021 in “International journal of molecular sciences” Sheep and goat hair fibers are complex due to keratin-associated proteins, which are important for fiber properties and growth.
16 citations,
October 2021 in “Trends in biotechnology” Future hair products will use ecofriendly proteins and peptides to improve hair health and appearance.
1 citations,
April 2023 in “Biomolecules” Fermented papaya and mangosteen in hair care products helped prevent hair loss and improve hair thickness.
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.
Prussian Blue causes hair cuticles to detach, weakening the hair.
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.
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.
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.