40 citations,
July 2015 in “Journal of Cellular Biochemistry” Cysteine helps maintain keratin production in skin cells even when iron is low.
15 citations,
January 2018 in “Advances in experimental medicine and biology” Keratin proteins are crucial for hair growth and structure.
24 citations,
November 2015 in “Scientific reports” Human hair has a new region with ordered filaments and the cuticle contains β-keratin sheets.
May 2024 in “International Journal of Cosmetic Science” Disulfide bonds are crucial for hair's strength, especially when wet.
1 citations,
November 2022 in “Molecules/Molecules online/Molecules annual” Low-molecular weight hyaluronate can make damaged hair stronger.
March 2001 in “Clinics in Dermatology” Hair disease research is a growing and evolving field in dermatology, with recent significant advances.
9 citations,
April 2019 in “Journal of structural biology” Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.
6 citations,
May 2020 in “Molecules/Molecules online/Molecules annual” Yak belly hair has higher porosity and is less stiff than human hair, making it absorb dye better but less suitable as a direct substitute for hair dyeing.
40 citations,
March 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Growing hair follicles have high mitochondrial activity and ROS in specific regions, aiding hair formation.
2 citations,
February 2016 in “Journal of sol-gel science and technology” A small molecule can strengthen fine hair, making it more resistant and natural-feeling.
62 citations,
December 2008 in “Journal of structural biology” Hair curvature in Japanese people is linked to specific cell types and filament arrangements in the hair cortex.
August 2024 in “Cosmetics” K18® and Olaplex® both effectively repair bleached hair, improving its strength, smoothness, and overall health.
February 2023 in “European biophysics journal” 22 citations,
September 1982 in “Journal of ultrastructure research” Wool follicle cells are more complex than previously thought.
5 citations,
January 2018 in “International Journal of Trichology” Hair strength is similar across different scalp areas, and not affected by age, gender, or hair thickness.
Human hair can almost fully recover its structure within about 1,000 minutes after being stretched.
30 citations,
January 2009 in “The scientific world journal/TheScientificWorldjournal” Hair is hard to dissolve because of its complex proteins, but certain solvents that break specific bonds and hydrate can do it.
13 citations,
January 2012 in “Dermatology” Eruptive vellus hair cysts are rare, benign skin lesions that are hard to treat.
January 2022 in “Journal of clinical and diagnostic research” A rare skin bump with tiny hairs was successfully removed from a man's face.
Hair keratin treatments can be harmful, potentially causing health issues like skin reactions and cancer.
20 citations,
September 2018 in “Journal of colloid and interface science” Modified keratin binds better to hair, especially bleached hair.
16 citations,
August 1992 in “Archives of dermatological research” Lab-grown nail cells show characteristics similar to natural nail and hair.
16 citations,
January 2017 in “Physical chemistry chemical physics/PCCP. Physical chemistry chemical physics” The 3D structure of a key hair protein was modeled, revealing specific helical structures and stabilization features.
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.
November 2023 in “Journal of the Taiwan Institute of Chemical Engineers” Scientists made nanoparticles from human hair proteins to improve drug delivery.
July 2023 in “Drug testing and analysis (Print)” Homemade hair treatments can significantly lower drug levels in hair, possibly causing false-negative drug tests.
3 citations,
December 2021 in “Materials today communications” A new film made from human hair supports skin cell growth better than collagen.
21 citations,
January 2005 in “Skinmed” Hair and nails are similar keratin structures with different shapes and growth, affected by the same diseases and environmental factors.
2 citations,
April 2015 in “Dermatology practical & conceptual” Daily use of antifungal shampoo can hide symptoms and make it hard to diagnose fungal scalp infections.
January 2018 in “The Kaohsiung journal of medical sciences” A young man had a rare case of hair cysts on his elbows, which was hard to diagnose and treat.