5 citations
,
January 1995 in “Journal of Investigative Dermatology” A trial found that using finasteride, a hair growth drug, can be effectively measured by comparing before and after photos.
16 citations
,
January 2002 in “Dermatology” Early baldness is noticed due to both reduced hair density and thinner hair shafts.
March 2021 in “Journal of The European Academy of Dermatology and Venereology” Low quality of life and high HSS-29 scores increase risk of losing patients during treatment.
38 citations
,
May 2009 in “European journal of dermatology/EJD. European journal of dermatology” TrichoScan® is a reliable tool for measuring hair growth, providing quicker and more consistent results than manual methods.
5 citations
,
June 2024 in “Cureus” The methods tested are reliable for assessing dandruff reduction.
May 2026 in “Comprehensive Psychoneuroendocrinology” Hair analysis can effectively assess long-term hormone activity in young children.
November 2024 in “Frontiers in Endocrinology” Hair analysis can help diagnose adrenal disorders non-invasively.
14 citations
,
February 1982 in “American Journal of Clinical Nutrition” Hair pluckability can help assess protein nutrition status.
4 citations
,
March 2015 in “Skin Research and Technology” Trichotillometry is a reliable method to measure hair strength and assess hair loss treatments.
5 citations
,
January 2018 in “Skin Research and Technology” TrichoScan needs optimization as it underestimated hair density by 38.9% compared to manual counting.
December 2020 in “Journal of Skin and Sexually Transmitted Diseases” No strong link between testosterone or DHEAS levels and acne or hair loss in females.
7 citations
,
November 2007 in “PubMed” Turkish women with female pattern hair loss have lower hair density, and visual counting is more effective than digital image analysis for detecting this.
33 citations
,
January 2005 in “Dermatology” Trichoscan is a reliable method for measuring hair growth and monitoring treatment effectiveness in hair loss.
March 2012 in “Journal of The American Academy of Dermatology” Dermoscopy helps diagnose different hair loss conditions, and characteristics vary among ethnicities and individual cases.
16 citations
,
November 2013 in “European Journal of Dermatology” Hair gets thinner and grayer with age, and density decreases more in men on top and in women on top and back.
14 citations
,
May 2013 in “Experimental Dermatology” The modified wash test is better than TrichoScan® for diagnosing hair loss.
January 2018 in “한국피부장벽학회지” DHCer levels in hair could be a biomarker for alopecia progression.
11 citations
,
March 2023 in “Frontiers in Nutrition” Hair analysis can detect small changes in dietary zinc intake.
7 citations
,
August 2023 in “Skin Research and Technology” Scalp conditions change with age, affecting hair health.
27 citations
,
December 2012 in “The Journal of Steroid Biochemistry and Molecular Biology” Dexamethasone may cause hair loss by stopping cell growth.
17 citations
,
January 2011 in “Skin Research and Technology” Hair from people with seborrheic dermatitis is thicker scaled, more damaged, and thinner than healthy hair, and atomic force microscopy can help monitor the condition.
7 citations
,
February 2018 in “International Journal of Pharmaceutics” Researchers developed a method to measure drugs in hair follicles and found that both water-loving and fat-loving drugs can be detected after being applied to the skin.
September 2024 in “Journal of Investigative Dermatology” A new tool can analyze hair to detect changes due to hormones, genetics, and aging.
12 citations
,
March 2000 in “Clinical Chemistry” Chronic DHEA supplementation slightly increases testosterone in hair but stays within safe limits.
June 2025 in “British Journal of Dermatology” Standardized forms and digital tools can improve alopecia biopsy diagnosis.
January 2001 in “대한피부과학회지” Hormone levels in women with androgenetic alopecia are similar to those without the condition.
567 citations
,
October 2007 in “Clinical and investigative medicine” Hair cortisol can be used to measure long-term stress exposure.
February 2019 in “Obstetrics and gynaecology cases - reviews” Women with excessive hair growth tend to have shorter index and ring fingers compared to others.
4 citations
,
January 1991 in “Journal of obstetrics and gynaecology” The photographic method accurately measures hair growth and both treatments effectively reduced hair growth in hirsute women.
April 2023 in “Journal of Investigative Dermatology” The MDhair app accurately assesses hair loss severity with 94% accuracy.