7 citations
,
March 2019 in “Journal of cosmetic dermatology” African hair has the most lipids, while Caucasian hair is more hydrated and stronger.
March 2025 in “Digital Library of Theses and Dissertations (Universidade de São Paulo)” Ferulic acid and resveratrol protect hair from chemical and sun damage.
August 2024 in “Cosmetics” K18® and Olaplex® both effectively repair bleached hair, improving its strength, smoothness, and overall health.
3 citations
,
April 2012 in “Journal of the American Academy of Dermatology” Men with Addison disease should be screened for X-linked adrenoleukodystrophy if they have hair loss.
854 citations
,
February 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” Understanding hair follicle development can help treat hair loss, skin regeneration, and certain skin cancers.
3 citations
,
March 2023 in “Scientific Reports” Researchers developed a new method to test hair growth drugs and found that adult cells are best for hair growth, but the method needs improvement as it didn't create mature hair follicles.
January 2026 in “International Journal of Biological Macromolecules” Small KP peptide improves hair without reducing agents, while larger proteins need them for better results.
May 2024 in “Proteome science” Bleaching damages hair by reducing the quality of keratin and keratin-associated proteins.
July 2025 in “Journal of Cosmetic Dermatology” The model shows how heat damages hair, helping test hair care products.
98 citations
,
November 1999 in “Dermatology Online Journal” IGF-1 can boost hair growth by promoting cell growth and preventing cell death.
35 citations
,
April 2008 in “Human Molecular Genetics” Skin and hair can help us understand organ regeneration, especially how certain stem cells might be used to form new organs.
10 citations
,
January 2010 in “International journal of trichology” Keratin-associated proteins are part of the developing hair fiber cuticle.
9 citations
,
February 2001 in “Journal of Dermatological Science” p21waf1/cip1 and p27kip1 help in hair follicle differentiation in rats.
September 2024 in “International Journal of Molecular Sciences” Hydrangea serrata extract may promote hair growth and improve hair health.
349 citations
,
January 2005 in “The FASEB journal” Human skin can make serotonin and melatonin, which help protect and maintain it.
5 citations
,
June 2022 in “Biophysical Journal” TGF-β and TNF influence hair follicle cell fate, with TNF being more effective in triggering cell death.
March 2024 in “Tissue and cell/Tissue & cell” Telomerase-positive cells are mainly in the bulb matrix and outer root sheath of hair follicles.
22 citations
,
August 2015 in “PloS one” Keratin from hair binds well to gold and BMP-2, useful for bone repair.
22 citations
,
July 1998 in “Journal of Investigative Dermatology” The 4C32 gene may help in mouse skin development and differentiation.
August 2025 in “Applied Sciences” Peroxide-rich plasma-activated water is gentler on hair than nitrate-rich formulations.
22 citations
,
September 2000 in “Journal of Investigative Dermatology” μ-Crystallin may help hair growth by affecting thyroid hormone levels in mouse hair follicles.
16 citations
,
January 2015 in “Forensic science international” The hair of two ancient Chilean mummies is well-preserved and contains high levels of heavy metals.
8 citations
,
May 2020 in “International journal of biological macromolecules” Certain treatments can increase protein binding to natural hair but are less effective on permed hair.
April 2025 in “Antioxidants” Rhus semialata gall extract and Penta-O-Galloyl-β-D-Glucose may effectively reduce hair loss.
February 2019 in “PubMed” The research found that twisting hair fibers can show changes in stiffness and damage, and help tell apart different hair treatments.
Hair germ cells differ from epidermal cells in keratin expression, and specific keratins form after hair differentiation.
84 citations
,
September 2008 in “Developmental biology” Retinoic acid-binding proteins in skin are regulated by β-catenin and Notch signalling.
21 citations
,
January 2023 in “International Journal of Molecular Sciences” S100A6 protein is linked to disease progression, especially in cancers.
3 citations
,
March 2024 in “iScience” Long-lived proteins may predict age-related diseases.
19 citations
,
July 1964 in “PubMed” Hair follicle cells become four types: medulla, cortex, cuticle, and inner root sheath.