2 citations,
October 2023 in “Science advances” Touching hair can activate nearby nerve cells through signals from the hair's outer layer.
2 citations,
July 2023 in “Cosmetics” Surfactants in shampoos and conditioners remove some but not all lipids from hair, and more research is needed to understand their full impact.
August 2024 in “Cosmetics” K18® and Olaplex® both effectively repair bleached hair, improving its strength, smoothness, and overall health.
August 2021 in “Asian Journal of Pharmaceutical and Clinical Research” Plant extracts in shampoo improved hair thickness and density in men with hair loss.
2 citations,
August 2023 in “Marine drugs” Collagen from tilapia scales may improve hair and skin health by reducing stress and inflammation and encouraging hair growth.
December 2023 in “International Journal of Molecular Sciences” Men with early balding showed higher levels of certain genes linked to hair loss and possibly prostate cancer.
January 2023 in “Journal of cosmetic dermatology” The synthetic retinoid EC23 thickens skin and promotes hair growth more effectively and with a lower dose than natural retinoids.
16 citations,
April 2011 in “Journal of The American Academy of Dermatology” Dermatologists play a key role in identifying and documenting signs of abuse and injury for forensic investigations.
November 2023 in “IntechOpen eBooks” Arsenic exposure from contaminated water severely damages the skin, causing hair loss, pigmentation changes, irritation, and can lead to skin cancer.
5 citations,
December 2014 in “Polish Journal of Public Health” Zinc is essential for many body functions and imbalances can lead to health problems.
137 citations,
July 2004 in “Journal of The American Academy of Dermatology” Horizontally sectioned scalp biopsies are more reliable for diagnosing hair loss in women when three samples are taken instead of one.
4 citations,
June 2020 in “Cosmetics” Broussonetia papyrifera extract helps hair growth by regulating specific proteins.
March 2009 in “Chinese Journal of Dermatology” Melanocytes in the outer root sheath are likely stem cells that grow fast but stay immature.
227 citations,
January 1998 in “Journal of Endocrinology” Cells from balding scalps have more androgen receptors than cells from non-balding scalps.
November 2023 in “Journal of Basic Microbiology” Green-synthesized zinc oxide nanoparticles effectively inhibit common fungi found on human scalp hair.
31 citations,
February 2019 in “International Journal of Cosmetic Science” Caffeine applied to the scalp can protect hair follicles from UV damage.
30 citations,
April 2011 in “Rapid communications in mass spectrometry/RCM. Rapid communications in mass spectrometry” Analyzing hair with this method can help understand and monitor scalp conditions and treatment effects.
29 citations,
March 2010 in “Journal of Dermatological Science” Wnt3a activates certain genes in hair follicle cells, including a newly discovered one, EP2, which may affect hair growth.
1 citations,
April 2018 in “Journal of Investigative Dermatology” People respond differently to hair loss treatment with PRP because of individual differences in growth factors from platelets.
68 citations,
May 2018 in “PLOS Biology” Cyclosporine A may help treat hair loss by blocking a protein that inhibits hair growth.
4 citations,
February 2019 in “American Journal of Human Biology” Collecting hair from all scalp sections works as well as the standard method for cortisol analysis.
31 citations,
February 2020 in “BioMed Research International” Thai people's hair density decreases with age and varies by scalp area, but hair thickness stays the same regardless of age or scalp area.
January 2018 in “Communications in computer and information science” Researchers developed a computer system to automatically diagnose hair loss by analyzing scalp images.
32 citations,
January 2006 in “Acta dermato-venereologica” SACUMAN, a rare condition causing hair loss without clear signs, is often misdiagnosed and needs scalp biopsies for accurate detection.
12 citations,
June 2006 in “Anais Brasileiros de Dermatologia” The study found average numbers for different types of hair follicles in the scalp and observed differences between men and women, suggesting reasons for more common hair shedding in women.
11 citations,
February 2021 in “Biomedicines” Bacteria in our hair can affect its health and growth, and studying these bacteria could help us understand hair diseases better.
28 citations,
March 2010 in “Histochemistry and Cell Biology” Different markers are found in stem cells of the scalp's hair follicle bulge and the surrounding skin.
159 citations,
December 2007 in “American Journal of Pathology” Stress-related substance P may lead to hair loss and negatively affect hair growth.
41 citations,
March 1998 in “Archives of Dermatological Research” The enzyme that changes testosterone to a stronger form is mostly found in the part of the hair follicle called the dermal papilla.
8 citations,
June 2019 in “Scientific Reports” Increased PPARGC1α relates to hair thinning in common baldness.