Hair product allergies are common, especially to hair dyes, and hairdressers are at higher risk.
June 2023 in “Hanguk ingeurie hakoeji” Eating fermented protein made from black bean powder twice a day for 60 days improved hair density but not scalp condition or hair thickness.
53 citations
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October 2012 in “The FASEB Journal” Bimatoprost, a glaucoma medication, may also help treat hair loss.
13 citations
,
April 2022 in “BMC Genomics” Dandruff scalps have unstable microbes, more Malassezia, less Cutibacterium, and targeting Lactobacillus may help.
9 citations
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January 2017 in “Annals of Dermatology” The study found genetic differences related to hair development that may explain hair loss in a patient with Trichorhinophalangeal syndrome type I.
7 citations
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October 2018 in “Journal of Craniofacial Surgery” About 21.3% of young, healthy Chinese men experience hair loss. Hairlines are mostly linear or have a central protrusion. Hair is densest on the top and back of the head, and hair follicles usually have 1 or 2 hairs. This information can help in designing hair restoration procedures.
3 citations
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December 2019 in “Biomaterials Research/Biomaterials research” Calcium and magnesium in hair increase with age and are higher in adult women.
1 citations
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August 2021 in “International journal of cosmetic science (Print)” Using piroctone olamine on the scalp helps reduce hair loss and improves scalp health.
January 2026 in “Dermatology Practical & Conceptual” Triamcinolone acetonide is more effective than cryotherapy for hair regrowth in alopecia areata but has different side effects.
October 2025 in “International Journal of Molecular Sciences” Early intervention in patch-type alopecia may prevent progression to more severe forms by targeting immune pathways and preserving keratin.
January 2023 in “Frontiers in Medicine” ALRV5XR is the most effective hair regrowth treatment at 24 weeks.
212 citations
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September 2015 in “Journal of Investigative Dermatology” The document provides a method to classify human hair growth stages using a model with human scalp on mice, aiming to standardize hair research.
193 citations
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August 2005 in “Journal of Investigative Dermatology Symposium Proceedings” Hair loss common in Australia; men affected earlier, more often than Asians; women less concerned.
187 citations
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June 1999 in “Journal of The American Academy of Dermatology” Finasteride effectively treats frontal hair loss with few side effects.
159 citations
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December 2007 in “American Journal of Pathology” Stress-related substance P may lead to hair loss and negatively affect hair growth.
113 citations
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September 2005 in “Journal of Investigative Dermatology” Applying a special compound can promote hair growth without harmful side effects.
93 citations
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February 2008 in “Atmospheric environment” Ozone reacts more with unwashed hair, producing compounds due to scalp oils, which could lower ozone exposure but increase exposure to reaction products.
86 citations
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June 2017 in “Stem cell investigation” Stem cells from hair follicles can safely treat hair loss.
76 citations
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November 2010 in “Journal of The American Academy of Dermatology” Some African American women's central scalp hair loss is linked to genetics and past fungal scalp infections, with more research needed on other causes.
73 citations
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April 2019 in “Experimental Dermatology” The scalp's microorganisms significantly affect hair health and disease.
72 citations
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February 2011 in “American Journal of Biological Anthropology” The conclusion is that recognizing hair growth cycles can improve the precision of dietary and health assessments from hair analysis.
68 citations
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May 2012 in “Annals of Oncology” Some breast cancer chemotherapy can cause permanent hair loss.
64 citations
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January 2009 in “The International journal of developmental biology” Hair follicle stem cells are controlled by their surrounding environment.
62 citations
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January 2004 in “The journal of investigative dermatology/Journal of investigative dermatology” A second domain of high sulfur KAP genes on chromosome 21q23 is crucial for hair structure.
57 citations
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September 2005 in “International Journal of Dermatology” Frequent use of chemical hair relaxants is linked to increased scarring hair loss in Nigerian women.
52 citations
,
August 1978 in “Journal of Applied Polymer Science” Human hair's ability to get wet is complex and can change with treatments, damage, and environment.
45 citations
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August 2013 in “Facial Plastic Surgery Clinics of North America” Using sharp tools and the right techniques in hair transplant surgery leads to less damage to hair follicles.
43 citations
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June 2012 in “Lasers in Medical Science” Low-level laser treatment helped rats regrow hair faster after chemotherapy.
41 citations
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January 2020 in “BioMed Research International” Micrografts improve hair density and thickness without side effects.
41 citations
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June 2013 in “PLOS ONE” Engineered skin substitutes can grow hair but have limitations like missing sebaceous glands and hair not breaking through the skin naturally.