234 citations,
November 2009 in “American journal of human genetics” Common variants in the Trichohyalin gene are linked to straight hair in Europeans.
51 citations,
September 2012 in “Biomacromolecules” Disulfide bonds make keratin in hair stronger and tougher.
37 citations,
October 2015 in “PeerJ” Perming significantly changes hair's molecular structure, while shampoo and conditioner do not.
26 citations,
July 2019 in “Dermatology and Therapy” The conclusion is that genetic testing is important for diagnosing and treating various genetic hair disorders.
21 citations,
January 2018 in “Journal of Investigative Dermatology” Rats can't grow new hair follicles after skin wounds, unlike mice, due to differences in gene expression and response to WNT signaling.
15 citations,
August 2020 in “Analytical chemistry” Hair lipids do not protect against humidity.
13 citations,
April 2018 in “Scientific Reports” The genes KRT25 and SP6 affect curly hair in horses, with KRT25 also causing hair loss. If both genes are mutated, the horse gets curly hair and hair loss. KRT25 can hide the effect of SP6.
8 citations,
July 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” Curly hair is mechanically different from straight hair and may need new testing methods.
4 citations,
January 2020 in “International Journal of Trichology” Too much epidermal growth factor can cause hair loss.
4 citations,
January 2017 in “International journal of trichology” Castor oil can cause severe hair matting.
2 citations,
July 2023 in “Cosmetics” Surfactants in shampoos and conditioners remove some but not all lipids from hair, and more research is needed to understand their full impact.
2 citations,
June 2023 in “Skin Research and Technology” Yellow dots and short vellus hairs are the most common signs of Alopecia Areata (AA), and trichoscopy can help diagnose AA and track treatment progress.
2 citations,
May 2023 in “Nanomaterials” Microemulsions could improve skin drug delivery but face challenges like complex creation and potential toxicity.
2 citations,
April 2021 in “FEBS open bio” Human hair keratins K85 and K35 create unique filament patterns important for early hair formation.
1 citations,
July 2021 in “Journal of Skin and Sexually Transmitted Diseases” Lipedema is a painful fat disorder in women that's hard to treat, often worsens with hormonal changes, and requires symptom-focused therapies.
October 2023 in “Biomimetics” The new hair-dyeing shampoo is safe, colors hair evenly, and strengthens it.
Different genes and pathways are active in yak skin and hair cells, affecting hair growth and immune responses.
February 2022 in “Fibers” Scientists created a non-toxic, sugar-based hair product that can style hair without damage.
March 2023 in “International Journal of Molecular Sciences” ADSC-Exos with miR-122-5p can help treat hair loss by promoting hair growth.
67 citations,
December 1990 in “The journal of cell biology/The Journal of cell biology” Researchers found genes for cysteine-rich proteins that form the protective layer of hair in humans and sheep.
27 citations,
March 2018 in “Journal of Experimental Biology” Wool fibre curvature is due to longer orthocortical cells compared to paracortical cells.
22 citations,
September 1982 in “Journal of ultrastructure research” Wool follicle cells are more complex than previously thought.
11 citations,
October 1997 in “British Journal of Dermatology” Wool follicles grew fibres for 8-10 days in a serum-free culture, influenced by calcium, glucose, amino acids, and insulin.
9 citations,
January 1989 in “Sen'i Gakkaishi” Wool and hair fibers absorb moisture similarly due to their keratin structure, with the amount of non-crystalline areas affecting the moisture uptake.
7 citations,
October 1963 in “Textile Research Journal” Merino wool fibers change shape with moisture, while human hair shape stays the same.
7 citations,
February 1985 in “Textile Research Journal” Cellular debris sticks to damaged wool fibers and affects wool cleanliness.
6 citations,
March 1998 in “Textile Research Journal” Chemical treatments can change the scale heights of wool and cashmere fibers, affecting their identification.
6 citations,
June 1976 in “Journal of ultrastructure research” Keratinized wool cells still have some organelles like lysosomes and mitochondria.
3 citations,
December 2021 in “Proteins” Wool fiber curliness is linked to the presence of certain proteins and K38.
3 citations,
January 1982 in “Australian journal of biological sciences” Ethionine significantly inhibits wool growth in sheep but not hair growth in mice or rats.