January 2026 in “International Journal of Biological Macromolecules” Keratin in people with androgenetic alopecia shows specific changes that could help develop new treatments.
April 2016 in “Apollo (University of Cambridge)” Trichotillomania is a hair-pulling disorder needing different treatments than OCD.
Gushen Shengfa pills and Wuling capsules are more effective for hair growth and sleep quality than the control treatment.
68 citations
,
January 2022 in “International Journal of Molecular Sciences” PCOS management includes lifestyle changes and medications, with ongoing research into repurposed drugs for better treatment options.
41 citations
,
March 2007 in “Journal of dermatological science” Taking L-cystine and vitamin B6 can prevent hair loss caused by smoke in mice.
28 citations
,
December 2011 in “Biocatalysis and biotransformation” PDI helps restore over-bleached hair's strength and structure by attaching special peptides.
4 citations
,
January 2014 in “Indian dermatology online journal” Monilethrix is a genetic hair disorder causing fragile, beaded hair with no effective treatment.
February 2025 in “Clinical & Experimental Dermatology and Therapies” Combining supplements with minoxidil improves hair growth more than minoxidil alone.
May 2015 in “Cancer research” After chemotherapy for early breast cancer, 33.4% of patients had long-term significant hair loss, with some hair regrowth over time, but treatments for hair loss were largely ineffective.
January 2014 in “International Journal of Trichology” Hair is culturally and economically valuable, and its weight is now used to measure the effectiveness of hair growth treatments.
9 citations
,
June 1947 in “Analytical Chemistry” Cold waving solutions quickly reduce cystine to cysteine in hair.
2 citations
,
April 2022 in “PLoS ONE” Vibration treatment may reduce migraine pain by changing cell structures.
April 2017 in “InTech eBooks” Many people with hair loss experience scalp pain known as trichodynia, but the causes are unclear and treatments vary.
2 citations
,
December 2019 in “Textile Research Journal” L-cysteine and ultrasound successfully improved rabbit hair fibers for industrial use.
November 2025 in “Eurasian journal of applied biotechnology” Combining L-cysteine, NAC, and a MET inhibitor significantly kills cervical cancer cells.
January 2019 in “Journal of cosmetology & trichology” L-Cystine and L-Cystine with Kera-Diet® safely improved hair and nail quality in healthy women.
May 2018 in “International journal of clinical obstetrics and gynaecology” N-acetyl cysteine and metformin both improved fertility in women with PCOS equally, but N-acetyl cysteine had fewer side effects.
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
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August 2020 in “Clinical, Cosmetic and Investigational Dermatology” The hair-growth formula with L-cystine helps protect and grow hair cells.
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.
4 citations
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December 2013 in “Acupuncture and related therapies” N-acetyl-cysteine shows promise in treating various diseases and may improve skin and hair conditions, but more research is needed on dosages and long-term effects.
August 2025 in “Journal of Cosmetic Dermatology” The dietary supplement AGA-P improves the effectiveness of hair loss treatments.
4 citations
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May 2020 in “Annals of palliative medicine” Plum blossom needle acupuncture with qi-invigorating therapy is more effective for Seborrheic Alopecia than Western medicine.
Millet extract, wheat germ oil, L-cystine, and calcium pantothenate reduced hair loss and improved hair growth in women with diffuse alopecia.
September 2025 in “International Journal of Cosmetic Science” Heat and UV exposure damage hair structure by altering keratins.
October 2024 in “Cosmetics” ATG effectively reduces hair frizz without damaging hair strength.
May 2010 in “International Journal of Cosmetic Science” Mercaptans make hair more prone to damage, with reduced hair being more affected than permed hair.
10 citations
,
January 1994 Hair can be straightened using different chemicals, not just strong alkali.
28 citations
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January 2016 in “RSC Advances” A non-toxic formula using polycarboxylic acids strengthens and improves hair.