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Glossary Keratin

protein forming hair, nails, and skin's outer layer

Keratin is a type of protein that forms the structural foundation of hair, nails, and the outer layer of skin. It provides strength and protection, making these tissues resilient and less prone to damage. In hair, keratins are essential for maintaining its integrity and elasticity, and they play a crucial role in the hair's overall health and appearance.

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Are keratin treatments good for people with alopecia, or do they only improve the hair’s appearance? Keratin treatments improve hair appearance but do not address alopecia or stimulate growth.
Is keratin in shampoos and conditioners actually absorbed by the hair, or does it just coat the surface? Keratin in shampoos mainly coats the hair rather than being absorbed.
Can keratin supplements taken orally improve hair growth, or are they only useful topically? Oral keratin supplements do not directly improve hair growth.
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Research

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research The human keratins: biology and pathology

1398 citations , May 2008 in “Histochemistry and Cell Biology”

This review summarizes the cell type distribution and functional significance of human keratins, emphasizing their roles in tumor diagnosis and potential clinical applications, and reports no new clinical findings.

research Keratins in health and cancer: more than mere epithelial cell markers

438 citations , October 2010 in “Oncogene”

This review discusses the role of keratins in epithelial cell stress protection and cancer, highlighting their potential as multifunctional regulators and diagnostic markers, without presenting new research findings.

Acidic and Basic Hair/Nail (Hard) Keratins: Their Colocalization in Upper Cortical and Cuticle Cells of the Human Hair Follicle and Their Relationship to Soft Keratins

research Acidic and basic hair/nail ("hard") keratins: their colocalization in upper cortical and cuticle cells of the human hair follicle and their relationship to "soft" keratins.

356 citations , December 1986 in “The journal of cell biology/The Journal of cell biology”

This study found that specific human hair keratins are differentially expressed in the hair follicle, suggesting a shared pathway of epithelial differentiation between hair cortex and nail plate cells.

research Different keratin polypeptides in epidermis and other epithelia of human skin: a specific cytokeratin of molecular weight 46,000 in epithelia of the pilosebaceous tract and basal cell epitheliomas.

277 citations , October 1982 in “The Journal of Cell Biology”

This study found that the cytokeratin patterns in skin epithelia can distinguish between different types, with basal-cell epitheliomas showing a striking similarity to the pilosebaceous tract.

research Keratins of the Human Hair Follicle

276 citations , January 2005 in “International review of cytology”

More research is needed to understand how hair keratins work and their role in hair disorders.

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Community Join

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community Discussion: Keratin Microsphere Results

31 upvotes 2 years ago

Keratin microspheres may offer additional mechanisms to combat hair loss compared to minoxidil. The process to create these microspheres is relatively simple and can be done at home with basic equipment.

community Is keratin fusion bond good alternative to clip on hair patch for diffused thinners

4 upvotes 3 years ago

Keratin fusion bonds are discussed as an alternative to clip-on hair patches for men with diffused thinning. The conversation explores different styling options for hair loss.

community Keratin fibers vs. Gossypium Herbaceum Hair fibers

1 upvotes 2 years ago

The conversation is about comparing keratin hair fibers to Gossypium Herbaceum hair fibers for diffuse hair loss. The user prefers keratin fibers for their durability and is seeking a bulk purchase option.

community Is Biotin or Keratin shampoo better for hair health/growth

6 upvotes 2 years ago

Biotin and Keratin shampoos are discussed for hair health and growth. Users suggest shampoos alone don't significantly aid hair growth.

community Keratin microspheres - breakthrough

14 upvotes 2 years ago

A gel of keratin microspheres promotes hair follicle growth, showing similar effectiveness to minoxidil in mice. The treatment activates hair growth pathways and reduces inflammation, with potential applications in drug delivery for hair-related disorders.

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