18 citations
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January 1994 in “Skin pharmacology and physiology” Sunlight damages hair, causing cuticle loss, protein changes, and discoloration.
2 citations
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January 2004 in “PubMed” Conditioners with PQ-10 soften the flat part of hair cuticles but harden the edges.
1 citations
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September 2022 in “Journal of dermatological science” Certain vitamins and their derivatives can help hair grow longer by activating specific growth signals.
4 citations
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April 1989 in “The Journal of Dermatology” Trichohyalin granules help inner root sheath cells in hair follicles harden by integrating with keratin filaments.
36 citations
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December 2002 in “Experimental dermatology” Barley extract, specifically procyanidin B-3, can promote hair growth and counteract growth inhibition.
November 2016 in “University of the Arts London Research Online (University of the Arts London)” Shampoos with polymers and dyes help maintain and enhance hair color vibrancy.
August 2025 in “Journal of Investigative Dermatology” Fibronectin is essential for hair follicle regeneration and may help rejuvenate aged skin.
53 citations
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July 2016 in “Cosmetics” Future hair cosmetics will be safer and more effective.
82 citations
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November 1959 in “Annals of the New York Academy of Sciences”
August 2025 in “Journal of Applied Pharmaceutical Research” F4 and F6 hair gels showed promise for improving hair care but need more testing.
55 citations
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February 2014 in “Journal of Structural Biology” Human hair has a complex, variable structure with a consistent matrix and double-twist pattern.
January 2013 in “Chinese Journal of Dermatovenereology of Integrated Traditional and Western Medicine” YiFa compound serum may help treat hair loss by boosting hair follicle stem cell activity.
October 2019 in “DOAJ (DOAJ: Directory of Open Access Journals)” The nanoparticles effectively deliver herbal extract to enhance hair growth.
30 citations
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October 2021 in “Scientific Reports” Inhibiting glycogen metabolism can promote hair growth.
January 2025 in “SSRN Electronic Journal” 9 citations
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May 2018 in “Photochemistry and photobiology” The Hair BB Cream effectively prevents UV damage and improves hair health.
The guide suggests using keratin fibers and wigs to help hair look thicker or hide hair loss.
January 2003 in “Research Portal (King's College London)” Hair color affects light reflection, with black hair having higher cuticle angles and lighter hair showing less specular reflection.
January 2008 in “Chinese Journal of Spectroscopy Laboratory” Cysteine formation on hair indicates damage, best detected at pH 4.5.
8 citations
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July 2019 in “Cell Proliferation” Researchers found a way to turn skin cells into cells that can grow new hair.
47 citations
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June 1996 in “International Journal of Legal Medicine” Hair analysis for drugs needs a better understanding of how drugs enter hair, considering factors like hair structure and pigmentation.
22 citations
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January 2006 in “Journal of Structural Biology” Hair follicles form hard α-keratin filaments in four steps, showing structural differences.
June 2020 in “Journal of Investigative Dermatology” Tiny particles from skin cells can help activate hair growth.
58 citations
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April 1993 in “Developmental Biology” bFGF delays hair growth in mice.
52 citations
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February 2005 in “Biopolymers” Chemical hair straightening changes hair proteins and mostly fixes broken bonds.
January 2026 in “SSRN Electronic Journal” Riboflavin with blue light speeds up hair dyeing, making it faster, safer, and long-lasting with less hair damage.
March 2014 in “Journal of The American Academy of Dermatology” Mycophenolic acid may help hair growth, a combination treatment improves hair thickness in male hair loss, and early treatment of frontal fibrosing alopecia is important.
1 citations
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January 2002 in “Springer eBooks”
13 citations
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September 2021 in “Current Issues in Molecular Biology” Dexpanthenol helps human hair follicle cells grow by preventing aging and death, and by supporting growth signals.
2 citations
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July 2016 in “Journal of nature and science” Human hair can transmit magnetic signals through glass.