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research Ultrastructural localization of hair keratin homologs in the claw of the lizard Anolis carolinensis

20 citations , December 2010 in “Journal of Morphology”

In this study, researchers found that alpha-keratin homologs similar to those in mammalian hair are present in the claws of the lizard Anolis carolinensis, suggesting a structural role during claw formation.

research Keratins 1 and 10 or homologues as regular constituents of inner root sheath and cuticle cells in the human hair follicle.

44 citations , August 1990 in “PubMed”

This study provides evidence for K1 and K10 derivatives' presence in the inner root sheath and hair cuticle, suggesting that these hair follicle parts may follow familiar keratinization principles.

research Hoxc13 and homologs of mammalian hair keratins are required for the cornification of nuptial pads in Xenopus frogs

June 2026 in “Communications Biology”

In this study, researchers found that the cornification process in the nuptial pads of Xenopus frogs involves the expression of the type II hair keratin homolog, krt59, and is regulated by the transcription factor hoxc13, showing similarities to mammalian hair evolution.

research The Hairless Phenotype of the Hirosaki Hairless Rat Is Due to the Deletion of an 80-kb Genomic DNA Containing Five Basic Keratin Genes

35 citations , April 2008 in “Journal of Biological Chemistry”

This study found that the lack of expression and deletion of specific hair keratin genes on chromosome 7q36 in Hirosaki hairless rats suggests the crucial role of these genes in hair growth.

research Structural Hierarchy of Trichocyte Keratin Intermediate Filaments

15 citations , January 2018 in “Advances in experimental medicine and biology”

This review discusses recent advances in understanding the structural hierarchy of trichocyte keratins, including their heterodimeric structure and distinct conformations impacting hair growth, with no new experimental results reported.

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Learn

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learn Keratin

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.
What role does keratin play in strengthening weak or thinning hair? Keratin strengthens hair by forming protective structures that prevent breakage and thinning.
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.
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learn Hair Fibers

cosmetic product that temporarily makes hair appear thicker

learn Biotin

supplement to help with hair texture and quality

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Community Join

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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 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 Let's talk keratin products and hair loss

2 upvotes 11 months ago

OP is considering using a keratin gel to improve hair quality and is concerned about its safety and visual impact on a slightly balding crown. Users discuss shampoo frequency, with some suggesting less frequent use for better hair health, but OP prefers regular shampoo and conditioner for silky hair.

community Is it safe to get keratin treatment on transplanted hair?

2 upvotes 2 years ago

A user with frizzy transplanted hair is considering a keratin treatment after 10 months and is concerned about its safety and potential to accelerate hair loss or cause telogen effluvium. They are seeking advice on whether it is safe to proceed with the treatment.

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Clinics

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All 14 clinic results →

Experts

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SMP Specialist
Hairo Fallas
Newark, NJ, United States

Hairo Fallas