The human scalp has different types of pigment cells in hair follicles with varying abilities to produce pigment.
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.
28 citations
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October 2004 in “Differentiation” A gene deletion causes the "hairless" trait in Iffa Credo rats.
61 citations
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February 1997 in “Differentiation” Hair differentiation starts earlier than thought, involving multiple type-II keratins.
12 citations
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January 2013 in “Acta Histochemica” Junctional proteins stabilize the inner root sheath and connect the companion layer in human hair.
29 citations
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July 2003 in “Experimental Dermatology” The upper hair follicle is stable, while the lower part allows movement during hair growth.
9 citations
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August 2007 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Sheep wool follicles absorb different amino acids at various rates and locations, which could affect wool growth based on diet and genetics.
3 citations
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January 2011 in “International Journal of Trichology” Tinea capitis affects only a specific hair area, not deeper parts.
2 citations
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April 2021 in “International Journal of Pharmaceutics” Serum formulations were better at delivering molecules to the hair bulb than nanoparticles.
1 citations
,
October 2017 in “ecancermedicalscience” Breast cancer alters specific molecular structures in hair, which revert after cancer removal.
20 citations
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February 2016 in “American Journal of Pathology” The genes OVOL1 and OVOL2 are important for hair growth and may be involved in a type of skin tumor.
September 2022 in “bioRxiv (Cold Spring Harbor Laboratory)” A new staining method shows a special area in the hair's skin layer with lots of proteoglycans.
25 citations
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May 1994 in “Journal of Investigative Dermatology” Researchers found a new gene, hacl-1, that is active in mouse hair follicles during hair growth and may be important for hair biology.
14 citations
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January 2011 in “Journal of Cutaneous Pathology” CK15 is not a reliable marker for stem cells in damaged hair follicles from patients with CCCA.
150 citations
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April 1999 in “Dermatologic Clinics” Laser hair removal effectiveness depends on targeting hair structures without harming the skin, and improvements require more research and expert collaboration.
46 citations
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May 2004 in “Facial Plastic Surgery Clinics of North America” Creating a natural-looking hairline in hair restoration surgery involves using follicular unit grafts, proper hair placement, and artistic skills to give the illusion of density.
21 citations
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November 2009 in “Dermatologic Clinics” The document suggests that certain protein deficiencies and scalp blistering in Epidermolysis Bullosa may cause hair loss.
12 citations
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May 2011 in “Dermatologic Clinics” Hair loss in autoimmune blistering skin diseases varies and may regrow with disease control.
69 citations
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April 2010 in “Dermatologic Surgery” Bimatoprost is a safe and effective treatment for making eyelashes longer, thicker, and darker.
48 citations
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May 1991 in “The journal of investigative dermatology/Journal of investigative dermatology” Trichohyalin is also found in the outer layers of normal human skin.
44 citations
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December 1991 in “Annals of the New York Academy of Sciences” EGF and FGF help hair growth by affecting cell differentiation and fiber growth.
41 citations
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March 2007 in “Journal of dermatological science” Taking L-cystine and vitamin B6 can prevent hair loss caused by smoke in mice.
30 citations
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April 2017 in “European Journal of Cell Biology” CIP/KIP proteins help stop cell division and support hair growth.
18 citations
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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.
3 citations
,
July 2011 in “Folia Histochemica et Cytobiologica” Calcium reduces involucrin in rat hair bulbs but doesn't affect filaggrin and Kdap.
3 citations
,
March 2014 in “Veterinary dermatology” Norwegian puffin dogs have a unique type of hair loss that often doesn't get better on its own and responds well to ciclosporin treatment.
2 citations
,
December 2023 in “Royal Society of Chemistry eBooks” Hair is a complex organ, and understanding its detailed structure and growth phases is crucial for analyzing substances within it.
August 2023 in “International Journal of Molecular Sciences” The human scalp hair bulb contains different types of melanocytes with varying abilities to produce melanin.
134 citations
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September 2008 in “Lasers in surgery and medicine” Low fluence photoepilation temporarily removes hair by targeting the hair follicle's pigmented area without severe damage.
130 citations
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December 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair follicle melanocytes die during hair regression.