41 citations
,
March 2007 in “Journal of dermatological science” This study found that oral administration of l-cystine with vitamin B6 effectively prevents environmental cigarette smoke-induced alopecia in mice by reducing hair bulb cell apoptosis.
11 citations
,
June 2012 in “Archives of Dermatological Research” This study demonstrated that high doses of L-cystine and vitamin B6 effectively prevent doxorubicin-induced hair loss in mice.
June 2023 in “Italian journal of dermatology and venereology” In this study, researchers evaluated an oral supplement containing arginine, l-cystine, zinc, and vitamin B6, finding it effective as an adjuvant treatment for telogen effluvium, as indicated by improved hair quantity and diameter after three months in 18 patients.
January 2013 in “Российский журнал кожных и венерических болезней” This study found that intradermal injections of group B vitamins and cystin B6 complex improved scalp circulation, supported hair growth, and reduced hair loss in patients with diffuse alopecia.
January 2013 in “Российский журнал кожных и венерических болезней” This article reviews the pathophysiology and limited effectiveness of current treatments for androgenic alopecia, including finasteride, minoxidil, botulinum toxin A, and platelet-rich plasma, and highlights the need for new therapeutic approaches; it reports no new clinical findings.
4 citations
,
May 2020 in “Annals of palliative medicine” In this clinical study, plum blossom needle acupuncture and qi-invigorating therapy were reported to be more effective than conventional Western medicine for treating seborrheic alopecia, as they improved hormone levels, reduced hair loss, and stimulated hair growth among the 87 patients observed.
January 2014 in “Chinese Journal of Aesthetic Medicine” This study observed that treating early male androgenetic alopecia with ChuZhiShengFaPian and Licorzine Granules in combination with topical minoxidil showed higher short-term efficacy than with traditional supplements, without significant adverse reactions.
May 2015 in “Cancer research” This study found that persistent significant alopecia was a common side effect following FEC-docetaxel chemotherapy, with a 33.4% global incidence, highlighting the need for awareness and potential preventative measures like cooling caps during treatment.
126 citations
,
January 2009 in “International Journal of Trichology” This review discusses the potential role of oxidative stress in hair graying and age-related alopecia, emphasizing the need for new strategies to counteract these effects, but reports no new results.
7 citations
,
January 2017 in “Journal of cosmetology & trichology” This article discusses how nutritional and environmental factors, along with antioxidant supplementation, may improve hair growth by mitigating the effects of androgens and reports no new clinical results.
14 citations
,
October 2023 This article summarizes the essential roles and effects of deficiencies of both fat-soluble and water-soluble vitamins, noting issues ranging from blindness due to vitamin A deficiency to scurvy caused by a lack of vitamin C.
9 citations
,
September 2018 in “Journal of Photochemistry and Photobiology B-biology” This study demonstrated that combining l-cystine and thiamin in a formulation may protect against UV-induced damage in growth-limited human epidermal keratinocytes in vitro.
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.
December 2025 in “Journal of Ovarian Research” This study found that multiple vitamins, including B6, increased the number of growing follicles in newborn mouse ovaries in vitro. VB6 promoted primordial follicle activation via the PI3K/Akt signaling pathway in both cultured mouse and human ovarian tissues.
3 citations
,
January 2017 in “Journal of cosmetology & trichology” In this clinical trial, supplementation with Lambdapil® Anti Hair Loss capsules for 6 months significantly improved hair resistance and volume in women and increased the anagen/telogen hair ratio in men, indicating enhanced hair growth compared to the placebo group.
January 2019 in “Journal of cosmetology & trichology” In this study, researchers found that supplementation with L-cystine, either alone or with a keratin hydrolysate, significantly improved hair density, hair and nail brightness, and nail growth in women experiencing acute telogen effluvium and brittle nail syndrome over three months.
1 citations
,
December 2021 in “Pakistan biomedical journal” This review explores the effectiveness of seed cycling, a modern alternative medicine approach, in treating polycystic ovary syndrome and reports no new clinical results.
April 2024 in “Indian Scientific Journal Of Research In Engineering And Management” This review discusses the prevalence and contributory factors of polycystic ovarian syndrome and reports no new clinical findings; the authors emphasize the importance of early detection through screening.
1 citations
,
January 2010 in “Springer eBooks” Certain micronutrients may improve hair and nail health, but more research is needed to confirm their benefits.
52 citations
,
October 2016 in “Clinics in Dermatology” This review discusses various drugs that can cause drug-induced acne, noting specific clinical and histopathologic features, but reports no new clinical findings.
47 citations
,
December 2006 in “Therapy” This study found that a dietary supplement containing L-cystine, medicinal yeast, and pantothenic acid significantly improved hair growth in women with telogen effluvium over six months compared to placebo.
14 citations
,
April 2000 in “Animal Science/Animal science” This article explores how various nutrients and metabolic processes impact wool and hair follicle function in animals but reports no new experimental findings.
5 citations
,
July 1999 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” The researchers reported that applying proteolytic enzymes to mice skin negatively affected hair follicles, leading to degeneration and potential impairment of stem cells from the bulge area.
191 citations
,
November 1959 in “Annals of the New York Academy of Sciences” This article reports electron microscope studies on the structure of hair and wool, but it does not present new clinical findings.
This study assessed the effects of a formulation containing millet extract, wheat germ oil, L-cystine, and calcium pantothenate on women with telogen effluvium using Digital Phototrichogram, but it reports no new results.
July 2024 in “Skin Appendage Disorders” This study found that after 6 months of taking an oral supplement, patients with chronic telogen effluvium or androgenetic alopecia experienced a statistically significant increase in hair density and overall improved hair appearance compared to those taking a placebo, with the supplement being well tolerated.
April 2025 in “Nutrients” This study highlights conflicting evidence on the safety and efficacy of nutritional supplements for hair loss in breast cancer patients, emphasizing the need for oncologist management and further research.
3 citations
,
January 2019 in “International Journal of Trichology” This study found no statistical difference in thiol-disulfide balance between telogen effluvium patients and controls, suggesting oxidative stress may not affect telogen effluvium through this mechanism.
74 citations
,
July 1995 in “PubMed” This study suggests that reversible hypopigmentation in homocystinuric patients may result from tyrosinase inhibition by homocyst(e)ine, with in-vitro experiments showing copper sulfate reversing this inhibition.
8 citations
,
April 2016 in “Experimental dermatology” This study found that the immune-competent B6. Cg‐Tyr c−2J Hr hr /J congenic mouse line had a more pronounced delayed sunburn response and different proliferative skin reactions to UV exposure compared to SKH 1 mice.