72 citations,
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.
47 citations,
March 2022 in “Frontiers in cellular and infection microbiology” Changes in skin microbes play a role in some skin diseases and could lead to new treatments.
43 citations,
September 2001 in “Scanning” Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.
36 citations,
August 2011 in “Journal of dermatological science” Human hair has a protective lipid layer that can be damaged by moisture and treatments, affecting hair growth and health.
35 citations,
January 2018 in “Skin pharmacology and physiology” Nanoemulsion creams with certain enhancers can greatly increase caffeine delivery through skin.
31 citations,
December 2002 in “Biochimica et biophysica acta. G, General subjects/Biochimica et biophysica acta. General subjects (Online)” The research found two types of calcium in human hair, one that varies among individuals and another that is consistent across people.
30 citations,
April 2018 in “Experimental Dermatology” The article concludes that developing in vitro models for human hair structures is important for research and reducing animal testing, but there are challenges like obtaining suitable samples and the models' limitations.
18 citations,
August 2014 in “Lipids” Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.
14 citations,
February 2021 in “Experimental Dermatology” Cannabinoid receptor-1 signaling is essential for the survival and growth of human hair follicle stem cells.
10 citations,
August 2014 in “Skin research and technology” Sleep, testosterone levels, and a specific enzyme activity affect skin oil production in women.
8 citations,
November 2022 in “International Journal of Cosmetic Science” Human hair varies widely and should be classified by curl type rather than race.
8 citations,
January 2013 in “The scientific world journal/TheScientificWorldjournal” Human hair follicles may provide a noninvasive way to diagnose diseases and have potential in regenerative medicine.
7 citations,
July 2021 in “Molecules/Molecules online/Molecules annual” The method can measure vitamin B3 levels in human hair accurately.
5 citations,
May 2020 in “Pharmaceutical Research” Heat and chemicals improve finasteride delivery to scalp and hair follicles, potentially enhancing treatment for hair loss.
3 citations,
October 1995 in “International Journal of Dermatology” Finasteride helps treat skin issues like acne and baldness by blocking testosterone conversion.
1 citations,
December 2018 in “IntechOpen eBooks” Human hair shows promise for non-invasive medical testing, but more research is needed to standardize its use.
October 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Immune cells are essential for early hair and skin development and healing.
April 2018 in “Journal of Investigative Dermatology” Mint water extract boosts protective enzymes in skin cells.
April 2018 in “Journal of Investigative Dermatology” Nicotinic acid reduces excessive oil production in skin cells by activating a specific receptor, which could help treat acne.
September 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Human hair follicles have a unique way of using energy and might use the Cori cycle; blocking CCR5 could help treat hair loss.
September 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” The reconstructed skin model from hair follicles functions like human skin in processing chemicals and can be used to test ingredient safety.
121 citations,
January 1991 in “Acta dermato-venereologica” Terbinafine quickly builds up in skin and hair, staying effective for over 3 weeks.
107 citations,
December 2013 in “International Journal of Dermatology” The document concludes that hair is complex, with a detailed growth cycle, structure, and clinical importance, affecting various scientific and medical fields.
37 citations,
January 2015 in “Evidence-based Complementary and Alternative Medicine” An extract from Quercus acutissima bark was found to reduce sebum production and block an enzyme linked to acne.
31 citations,
October 2005 in “British Journal of Dermatology” Hair loss in women not always linked to increased oil production; other factors may be involved.
27 citations,
July 1982 in “British Journal of Dermatology” The antiandrogen 11α-hydroxyprogesterone effectively reduces skin oil and cholesterol when applied to the skin.
3 citations,
April 2011 in “Microscopy research and technique” Teratoma hair is similar to scalp hair but has a rougher surface and lower adhesive force.
April 2018 in “Journal of Investigative Dermatology” Sensitive scalp has higher pH, more redness, abnormal sebum, and altered bacterial makeup.
157 citations,
April 1994 in “Clinical endocrinology” Androgens can cause hair growth in some areas and hair loss on the scalp.
75 citations,
November 1965 in “Textile research journal” Papain and bisulfite break down human hair by dissolving parts of it.