May 2024 in “Molecules/Molecules online/Molecules annual” This narrative review reports that well-selected plant extracts and their active compounds may improve hair health by promoting hair growth and preventing hair loss, potentially aiding in developing targeted therapies for alopecia.
In this report, a unique case of premature graying in a 32-year-old male, with onset at age 15 and a distinctive fractal pattern, was presented, highlighting the need for further investigation into its potential causes and mechanisms.
27 citations
,
May 2024 in “Clinical and Translational Medicine” This review discusses the origin, characteristics, and therapeutic potential of melanocyte stem cells in skin pigmentation disorders and reports no clinical results.
In this case study, a patient experienced darkening of hair color after taking acitretin, an oral retinoid known for potentially causing alopecia, marking a rare and undocumented phenomenon.
2 citations
,
March 2024 in “Journal of Cosmetic Dermatology” This study highlighted the need for more extensive research, ideally randomized controlled trials with larger patient groups, to determine the effect of the indicated treatment on hair repigmentation following AA.
January 2024 in “GeroScience” This review explores how radiation-induced hair graying can be used as a model to study the mechanisms behind hair graying, focusing on cellular senescence and potential therapeutic targets to address age-related changes. Results are not provided.
This study reviews the regulatory mechanisms and molecular processes governing stem cell activity in hair follicles, highlighting their roles in hair regeneration and potential implications for treating hair and skin disorders.
21 citations
,
December 2023 in “Journal of Investigative Dermatology” This study highlights multiple factors contributing to hair graying, such as oxidative damage, melanocyte changes, and genetic influences, and suggests that repigmentation may be temporarily reversible, offering potential targets for future treatments while urging caution when applying mouse model findings to humans.
74 citations
,
October 2023 in “Nature Reviews Molecular Cell Biology” 
1 citations
,
September 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that stress-induced inactivation of the enzyme Dicer in melanocytes can cause premature hair greying by preventing proper melanocyte placement and melanin transfer in mice, suggesting the Dicer-miR92b-ItgaV pathway as an important link between stress and grey hair.
4 citations
,
August 2023 in “Journal of Cosmetic Dermatology” Gynostemma pentaphyllum extract may help grow hair and prevent graying.
104 citations
,
January 2023 in “Journal of Clinical Medicine” This review evaluates the hair cycle's phases and the factors influencing the transition between anagen and telogen, advocating for a holistic approach to addressing hair loss, though no specific results are reported.
2 citations
,
January 2023 in “International journal of biological sciences” This review discusses the mechanisms of hair repigmentation and reports no clinical results; the authors suggest further research into topical treatments for reversing gray hair.
1 citations
,
November 2022 in “International journal of trichology” In this case study, a 25-year-old female with premature hair graying achieved over 90% conversion of gray hair to black hair after 5 months of treatment with a topical peptide solution and hair supplements.
13 citations
,
May 2022 in “Cell discovery” This study used single-cell RNA sequencing to create a detailed atlas of human scalp hair follicles and found that early-stage hair graying involves matrix hair progenitor depletion linked to P53 pathway activation.
21 citations
,
May 2022 in “Frontiers in Cell and Developmental Biology” This review covers the structure, development, cycle, and molecular regulation of hair follicles but does not report new results, aiming to offer insights for addressing hair follicle-related diseases.
5 citations
,
February 2022 in “Frontiers in physiology” This review discusses the role of various cells outside the hair follicle in regulating melanocyte stem cells and hair graying, but reports no new clinical results.
12 citations
,
October 2021 in “Cells” This review discusses the potential of miRNA-mediated hair growth treatments for androgenetic alopecia by targeting DKK1 to modulate the Wnt/β-catenin signaling pathway and reports no new clinical findings.
5 citations
,
October 2021 in “Frontiers in Cell and Developmental Biology” This study examined aging hair follicle stem cells in mice and found that inflammation reduction in dermal white adipose tissue can stimulate regenerative behavior, highlighting its role in hair follicle aging.
10 citations
,
August 2021 in “EMBO Reports” This study found that the anti-apoptotic Bcl-2 protein plays a crucial role in maintaining hair follicle stem cell function and influences tissue regeneration and tumor formation in mice.
10 citations
,
May 2021 in “Clinical, cosmetic and investigational dermatology” In this mouse study, UVA and UVB exposure led to hair follicle miniaturization, graying, and prolonged hair cycle duration, associated with changes in stem cells and increased Wnt signaling activity.
14 citations
,
October 2020 in “Scientific reports” This study found that ATM protein plays a crucial role in protecting human hair follicle melanocytes from oxidative stress, which is linked to the greying of hair.
1 citations
,
October 2020 in “Journal of Cosmetic Dermatology” In this study, premature hair graying in Egyptians was significantly linked to family history, stress, sedentary lifestyle, and low serum ferritin levels, but not to vitamin D deficiency.
37 citations
,
August 2020 in “BMC Genomics” This study found that while genetic variants contribute minimally to predicting hair greying in a Polish population, age remains the primary predictor, underscoring the complexity of hair greying as a genetic trait.
7 citations
,
July 2020 in “Dermatologic therapy” This review discusses premature graying of hair, highlighting risk factors like smoking and vitamin deficiencies, and suggests that addressing underlying conditions may reverse the graying process.
7 citations
,
July 2020 in “Pigment cell & melanoma research” In this study, RT1640 was found to promote hair pigment system regeneration and expand melanocyte stem cell pools in a mouse model, suggesting potential applications for aging-related hair disorders.
15 citations
,
June 2020 in “Experimental Dermatology” This review discusses recent genetic findings on hormonal signaling pathways in androgenetic alopecia, reporting no new study results but highlighting the need for further investigation.
6 citations
,
March 2020 in “Anais brasileiros de dermatologia/Anais Brasileiros de Dermatologia” This study found that in Turkish participants, factors such as male gender, late-onset, and temporal-onset were linked with more severe hair graying.
260 citations
,
January 2020 in “Nature” Stress can cause hair to turn gray by depleting stem cells.
28 citations
,
December 2019 in “Skin appendage disorders” This review discusses medication-induced gray hair repigmentation, highlighting that certain anti-inflammatory drugs and melanogenesis stimulators can cause diffuse repigmentation, though evidence remains low-quality and these medications are not currently indicated for this purpose.
1 citations
,
September 2019 in “Journal of cosmetic dermatology” This study found no significant difference in serum levels of lead and selenium between patients with premature hair graying and those without it.
23 citations
,
August 2019 in “Proceedings of the National Academy of Sciences of the United States of America” Pollution exposure speeds up hair damage.
In this study, 31.2% of medical students experienced premature greying of hair, with higher prevalence among females, impacting socio-cultural aspects but not self-esteem.
12 citations
,
May 2019 in “Journal of cosmetic dermatology” This review explores the factors contributing to premature graying of hair, highlighting the role of genetic and environmental influences such as oxidative stress, and discusses potential interventions like diet and herbal remedies, while noting the limitations of common treatments like hair dyes.
6 citations
,
January 2019 in “Indian Journal of Pharmacology” In this case study, a 14-year-old female with premature hair graying showed improved hair color after treatment with a topical Melitane 5% formulation and oral hair supplements.
7 citations
,
December 2018 in “Journal of Cosmetic Dermatology” This study found that a vegetarian diet preference, atopy history, and paternal family history were associated with a higher likelihood of premature hair graying in young adults.
17 citations
,
January 2018 in “International Journal of Trichology” This study found that patients with premature hair graying had lower serum levels of iron, copper, and calcium, which correlated with the severity of graying.
16 citations
,
January 2018 in “International journal of trichology” This study observed that individuals with premature hair graying had lower levels of certain serum nutrients and lifestyle factors like stress and smoking may contribute; hair oiling appeared protective.
26 citations
,
January 2018 in “Annals of dermatology/Annals of Dermatology” This review examines current understanding of hair graying and suggests it may be caused by depletion of melanocyte stem cells due to genotoxic stress or dysfunctional melanocytes from oxidative stress.
5 citations
,
January 2018 in “Acta dermato-venereologica” This study identified an association between premature hair greying and larger waist circumference among young healthy subjects.
2 citations
,
November 2017 in “Cardiovascular endocrinology” This study found that androgenic alopecia is the strongest predictor of coronary artery disease in young men from Western India, followed by premature graying and obesity.
13 citations
,
September 2017 in “Oncotarget” This study suggests that increased Wnt signaling may cause melanocyte stem cell exhaustion, leading to hair graying in aged mice by promoting excessive differentiation of melanocytes.
38 citations
,
June 2017 in “The Journal of Dermatology” This review synthesizes recent findings on the hair follicle stem cell niche and its complex interactions, exploring potential pathways for developing new hair growth therapies; it reports no new clinical results.
16 citations
,
January 2017 in “DOAJ (DOAJ: Directory of Open Access Journals)” This study found that premature hair graying is strongly associated with a family history, Vitamin B12 deficiency, and hypothyroidism, with onset as early as 5 years in patients in Gurugram, India.
26 citations
,
June 2016 in “Pediatric Dermatology” This study found that premature hair graying in young Turkish men and women is associated with emotional stress, alcohol consumption, chronic diseases, and a family history of graying.
196 citations
,
March 2016 in “Nature Communications” In this study, researchers identified 18 genetic associations with scalp and facial hair traits in Latin Americans, including novel loci for hair greying and balding, with implications for understanding hair evolution.
2 citations
,
February 2016 in “Irish journal of psychological medicine” In this case report, a 54-year-old male experienced hair loss and discoloration after starting mirtazapine, with full hair regrowth and color restoration occurring within 10 weeks of stopping the medication.
43 citations
,
January 2016 in “Oxidative medicine and cellular longevity” This review discusses the biological effects and mechanisms of THSG in antiaging and related disease treatments but reports no new experimental findings.
8 citations
,
January 2016 in “Cells tissues organs” This study found that chemical sympathectomy inhibited hair follicle growth in mice, suggesting that sympathetic nerves may regulate keratinocyte behavior to promote hair growth.
20 citations
,
January 2016 in “International journal of trichology” In this study, premature hair graying in Indian patients under 25 was associated with low levels of serum ferritin, Vitamin B12, and high-density lipoprotein cholesterol.
4 citations
,
January 2016 in “Annals of dermatology/Annals of Dermatology” Iron supplements can restore normal hair color in cases of premature graying linked to iron deficiency.
24 citations
,
January 2015 in “Evidence-based Complementary and Alternative Medicine” In this study, Polygonum multiflorum Radix promoted hair growth in mice, with oral administration being more effective, likely through FGF-7, while topical application favored SHH-related mechanisms.
46 citations
,
December 2014 in “Journal of The American Academy of Dermatology” This study found that smoking, obesity, and family history are significant risk factors for premature hair graying in young men.
37 citations
,
October 2014 in “Maturitas” This review discusses the mechanisms and treatment strategies for age-related hair changes, such as androgenetic alopecia and hair graying, and reports no new clinical results.
149 citations
,
July 2014 in “Cold Spring Harbor Perspectives in Medicine” This article provides contact information for Bruce A. Morgan and features no new research findings.
46 citations
,
April 2014 in “PLOS ONE” This study found that compromised antioxidant activity in gray hair follicles affects both mature melanocytes and their immature precursors, linked to down-regulation of melanogenesis-related genes.
67 citations
,
August 2013 in “International Journal of Cosmetic Science” This review discusses the role of oxidative stress in hair greying and suggests that understanding melanocyte susceptibility at different follicular locations may help develop therapies for preventing and reversing the process; it reports no new experimental results.
30 citations
,
April 2013 in “Journal of Investigative Dermatology” This study found that ionizing radiation primarily affects keratinocyte stem cells in the hair follicle, suggesting they play a central role in radiation-induced hair graying, rather than melanocyte stem cells.
8 citations
,
January 2013 in “Annals of Dermatology” This study found that hair dyeing is more common among Korean women than men and among individuals with significant grayness, and it was not linked to higher scalp disease prevalence.
47 citations
,
January 2013 in “Indian Journal of Dermatology, Venereology and Leprology” This review examines the pathogenesis of premature hair graying and potential treatment avenues, but reports no new experimental outcomes, highlighting ongoing research challenges and hopes for drug development.
35 citations
,
January 2013 in “International Journal of Trichology” This study found that serum calcium, serum ferritin, and vitamin D3 levels were lower in students with premature graying of hair compared to controls, suggesting a potential role in the condition.
17 citations
,
June 2012 in “The Anatolian journal of cardiology” This study found that increased hair graying was associated with a greater coronary atherosclerotic burden, suggesting it could serve as a risk marker for coronary artery disease independent of age.
25 citations
,
March 2012 in “Journal of oncology pharmacy practice” This case report describes an elderly multiple myeloma patient whose hair repigmentation was associated with lenalidomide use, suggesting hair graying may be reversible.
26 citations
,
October 2011 in “Biological trace element research” This study observed that lower serum copper levels may be linked to premature hair graying in young patients compared to controls.
36 citations
,
September 2011 in “British Journal of Dermatology” This study found that white hair exhibits increased expression of genes and proteins linked to active hair growth compared to black hair, suggesting that hair greying is associated with enhanced hair growth activity.
35 citations
,
May 2011 in “Experimental Dermatology” This study found that hair follicles undergo significant molecular changes with age, notably a decline in keratins and keratin-associated proteins, which may contribute to age-related hair alterations.
91 citations
,
April 2011 in “Journal of Ethnopharmacology” This study found that Polygonum multiflorum extract may promote hair growth by inducing the anagen phase in the resting hair follicles of mice.
56 citations
,
December 2010 in “The journal of investigative dermatology/Journal of investigative dermatology” This study suggests that the susceptibility of hair follicle melanocytes to oxidative stress as they age may be key in the graying of hair due to reduced catalase expression and activity.
217 citations
,
February 2009 in “The FASEB Journal” This study found that hydrogen peroxide accumulation and reduced methionine sulfoxide repair play a significant role in the oxidative damage linked to senile hair graying.
759 citations
,
February 2009 in “Current Biology” This review summarizes fundamental concepts and recent advancements in hair follicle biology, including insights from mouse models into broader molecular and cellular processes relevant to regeneration and development.
75 citations
,
January 2009 in “International journal of trichology” This review examines the differential aging of melanocytes in hair follicles and skin, and reports no new findings; the authors suggest further research is needed to understand these processes.
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.
171 citations
,
July 2007 in “Journal of Investigative Dermatology” The researchers reported that DHT-inducible DKK-1 may play a significant role in DHT-driven balding by inhibiting hair follicle cell growth and promoting apoptosis in androgenetic alopecia.
210 citations
,
May 2006 in “The FASEB journal” This study found that oxidative stress in hair follicle melanocytes contributes to premature aging and apoptosis, providing insights into graying as a model for studying aging and testing antiaging therapies.
105 citations
,
April 2005 in “Cell” This article discusses recent findings on hair graying involving melanocyte stem cell maintenance and key regulatory molecules, and reports no new experimental results.
12 citations
,
November 2004 in “Photochemistry and Photobiology” In this study, a superoxide dismutase gel prevented hair graying in mice exposed to photosensitization, suggesting that antioxidants can protect against oxidative damage involved in hair aging.
73 citations
,
July 1977 in “Archives of Dermatology” In this case report, applying linoleic acid topically reversed essential fatty acid deficiency and related skin symptoms in a patient receiving long-term fat-free intravenous nutrition.
