December 2024 in “Skin Appendage Disorders” Traction alopecia reduces hair density and thickness; proper hair care can help prevent it.
41 citations
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December 2008 in “International Journal of Dermatology” This study observed that hair density and thickness were significantly reduced across multiple scalp sites in South Korean women with hair loss, highlighting potential patterns that could aid in differentiating hair disorders.
1 citations
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December 2022 in “Clinical, cosmetic and investigational dermatology” In this study, Arab hair was found to have a higher thickness and lower density compared to other ethnicities, suggesting these factors should be considered in diagnosing and treating hair issues in Arabs.
3 citations
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August 2012 in “Annals of Diagnostic Pathology” This study found that women with AIDS had significantly reduced epithelial thickness and more telogen hair follicles on the scalp compared to women without AIDS.
87 citations
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February 2004 in “Plastic and Reconstructive Surgery” In this study, researchers achieved complete reepithelialization and hair growth on a burn-injured scalp using a tissue-engineered dermal template with early micrograft hair follicle implantation.
16 citations
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February 2017 in “Dermatology and Therapy” This study established and validated a visual scale to assess hair shedding in women with thick hair, finding it effective in distinguishing greater hair loss among women with female pattern hair loss compared to those without.
May 2026 in “International Journal of Versatile Research and Analysis” This study used air wedge interferometry to measure the thickness of human scalp hair from three individuals, finding average thicknesses of 66.482 µm, 59.355 µm, and 59.927 µm respectively, within the typical range for adults.
February 2025 in “Cureus” This study focused on developing and validating standardized methods to reliably assess hair growth and scalp health in androgenetic alopecia, finding significant differences in hair parameters such as vellus and terminal hair counts, density, and thickness between affected and standardized areas.
2 citations
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June 2024 in “Journal of the Korean Society of Cosmetology” In this study, 8-week hair loss management combined with aroma scalp massage did not significantly change hair thickness or density but improved scalp moisture and subjective satisfaction among 16 participants aged 20–50.
34 citations
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July 2011 in “Journal of the European Academy of Dermatology and Venereology” This study identified distinct dermoscopic patterns associated with different types of scalp tumors, highlighting variability in lesions related to patient age, gender, and tumor thickness.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” This source describes the SwaLife Onion Shampoo as an Ayurvedic-dermatological formulation intended to nourish the scalp, strengthen hair roots, and enhance hair thickness and shine through a blend of onion extract and botanicals, without reporting specific study results.
This study found that Scalp med®, a solution including minoxidil, significantly improved hair count and thickness in men with androgenetic alopecia after 24 weeks of treatment.
January 2008 in “Journal of Clinical Dermatology” This study found that a new topical agent, Scalp medⓇ, significantly improved hair count and thickness in men with androgenetic alopecia after 24 weeks of treatment.
68 citations
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March 2018 in “Biomaterials” This study found that fibronectin nanofiber dressings, made using rotary jet spinning, accelerated wound healing and improved tissue restoration in a full-thickness wound mouse model.
22 citations
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May 2002 in “Skin Research and Technology” This study found that in male androgenetic alopecia, the contrast enhanced phototrichogram technique was superior in detecting changes in hair density and thickness compared to other methods.
June 2022 in “Dermatologic Therapy” This case report describes a 14-year-old girl with congenital hypotrichosis who experienced improved hair density and thickness after 3 months of treatment with oral minoxidil.
November 2023 in “Journal of Investigative Dermatology” This study found that Adipose Stem Cell-derived Exosomes may improve hair growth and scalp rejuvenation, with clinical evidence showing increased hair counts and improved hair thickness compared to minoxidil.
30 citations
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July 2017 in “Stem cells and cloning” This study found that scalp injection of fat enriched with stem cells may offer a promising alternative for treating early genetic alopecia in both men and women.
May 2024 in “Journal of the Egyptian Women's Dermatologic Society /Journal of the Egyptian Women's Dermatologic Society” In this split-scalp study, researchers observed that combining fractional CO2 laser and PRP treatment was significantly more effective in improving hair parameters in women with female pattern hair loss than using each intervention alone or placebo.
January 2024 in “Burns and trauma” In a rat scalp expansion model, this study found that activating autophagy with rapamycin enhanced skin regeneration during tissue expansion by increasing expanded skin area, epidermis and dermis thicknesses, cell proliferation, angiogenesis, and other regenerative factors, whereas blocking autophagy reversed these effects.
1 citations
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January 2010 This article reviews various reconstruction techniques for scalp alopecia, highlighting the challenges of applying traditional flap methods and the limitations of hair grafting on unstable scars but offers no new study results.
1 citations
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July 2008 in “Expert Review of Dermatology” Normal hair thickness varies by scalp area and a mix of hair thicknesses is typical in healthy individuals.
January 2011 in “Web journal anti-aging medicine/Anti-aging medicine” In this study, kamishoyosangoshimotsuto extract improved skin moisture, texture, and brightness, as well as hair thickness and strength in women with skin and scalp hair problems over 24 weeks.
January 2022 in “Cosmoderma” This study found that combining oral minoxidil with dutasteride increased hair thickness, density, and new growth in male pattern baldness patients with minimal side effects.
1 citations
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December 2018 in “LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas)” This study found that combining electrotherapy with aromatherapy led to increased hair shaft thickness in men with androgenetic alopecia, although no changes in the scalp were observed.
June 2021 in “Research Square (Research Square)” This study reports that a single injection of stromal vascular fraction (SVF) cells into the scalp of patients with androgenetic alopecia significantly increased hair density and thickness within 3 to 6 months, with no observed side effects.
January 2018 in “Institutional Repository of Utenos kolegija Higher Education Institution” This study observed that a course of micro needle mesotherapy improved hair and scalp condition in males with alopecia.
3 citations
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July 2022 in “Dermatologic Therapy” This study reported that using non-absorbable magnesium microneedle patches for 12 weeks improved under-eye wrinkles as measured by a grading scale and wrinkle index, with minimal discomfort and no significant change in dermal thickness.
September 2025 in “The Professional Medical Journal” In this study, 5mg oral minoxidil given daily for 24 weeks significantly increased hair thickness and scalp appearance among 27 male patients with androgenetic alopecia, although some experienced side effects like hypertrichosis and mild headaches.
17 citations
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February 2018 in “Journal of Cosmetic and Laser Therapy” In this study, researchers administered eight sessions of intradermal injections containing growth factors into the scalp of 1000 patients, reporting a significant reduction in hair fall in 83% of participants and increased total hair count and shaft diameter, with promising tolerance and safety.