December 2010 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” New cells join the hair's dermal papilla during the growth phase, possibly affecting hair thickness.
January 2023 in “Al-Azhar International Medical Journal /Al-Azhar International Medical Journal” Trichoscopy is a quick, non-invasive way to measure hair density and thickness, helping diagnose hair loss.
December 2025 in “Zagazig University Medical Journal” PDO threads may help regrow hair and increase thickness in hair loss.
58 citations
,
April 2009 in “Dermatologic Surgery” Most women have a widow's peak and specific hairline features useful for designing hair restoration surgery.
211 citations
,
April 2013 in “Development” More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.
2 citations
,
May 2018 in “Journal of The American Academy of Dermatology” Hypothyroidism patients with hair loss typically have thinning hair, smaller hair follicles, and normal hair shedding.
March 1983 in “The Journal of the American Dental Association”
August 2019 in “Journal of The American Academy of Dermatology” The document concludes that using micropore tape on an 18-gauge needle can control depth in hair restoration surgery, reducing scalp trauma and complications.
November 2017 in “Dermatologic Therapy” A new topical solution safely reduces hair shedding by 38% on average by tightening a muscle in the scalp.
4 citations
,
November 2017 in “Journal of Cosmetic Dermatology” Certain polymers can stick to hair and increase volume, working best at a pH of 7 to 9.
6 citations
,
December 2018 in “International Journal of Cosmetic Science” Mexican women's hair is between Asian and Caucasian hair in thickness and shape, with varied strength and some damage.
24 citations
,
December 2011 in “Journal of The American Academy of Dermatology” Caucasian hair is denser, but Asian hair is thicker in female pattern hair loss patients.
4 citations
,
December 2020 in “Journal of the American Academy of Dermatology” Pulling 2 or fewer hairs is normal for all hair types, including Afro- and Asian-textured hair.
June 2022 in “Our Dermatology Online” Trichoscopy is essential for early detection and monitoring of female-pattern hair loss.
61 citations
,
April 2012 in “British Journal of Dermatology” Caucasian women's hair appears thickest in their 20s, with perceived thinning after mid-30s due to both decreasing density and diameter.
October 2022 in “Hair Transplantation” Temporary scalp trichopigmentation creates a shaved hair look on the scalp using pigments that fade over time.
4 citations
,
February 2015 in “PubMed” The hair fiber filler product increased satisfaction and improved quality of life for people with thinning hair.
10 citations
,
January 2002 in “Nihon Keshouhin Gijutsushakaishi/Journal of S C C./Nihon Keshouhin Gijutsushakai kaishi” The cuticle significantly contributes to hair stiffness, making up about 60% of the total bending stress.
2 citations
,
March 2017 in “Archives of Plastic Surgery” Intense pulsed light is a safe and effective way to thin hair for East Asians after hairline surgery.
10 citations
,
May 2008 in “Dermatologic Surgery” Densely packed hair grafts can survive well using the lateral slit technique.
4 citations
,
April 2019 in “Cosmetics” Hair stiffness is higher when it has more para-like cortical cells.
30 citations
,
March 2015 in “Journal of Dermatology” Hair thickness differences help diagnose hair loss severity.
September 1972 in “大会学術講演梗概集. 構造系” The document explains common hair disorders and the basics of hair anatomy and life cycle.
8 citations
,
October 2011 in “Anthropologischer Anzeiger” Pubic hair is thicker than axillary and scalp hair, useful for forensic identification.
25 citations
,
June 2003 in “Journal of Investigative Dermatology Symposium Proceedings” Phototrichogram and hair diameter measurements are effective, noninvasive ways to assess hair growth and detect early hair loss, with the most common pattern being reduced hair density.
April 2012 in “Informa Healthcare eBooks” Tight hairstyles can cause temporary or permanent hair loss, with less hair seen under a microscope in later stages.
September 2016 in “Journal of The American Academy of Dermatology” The girl has a genetic hair condition causing thin hair since childhood.
September 2022 in “International Journal of Trichology” Trichoscopic measurements help determine the severity of female pattern hair loss.
48 citations
,
January 2002 in “Journal of Structural Biology” Trichocyte filaments have a low-density core and may include proteins for hair structure.
June 2023 in “Experimental dermatology” Pubic hair has a thicker, more protective outer layer than scalp hair, possibly due to evolution.