Hair feels different when touched and rubs together in various ways.
January 2009 in “Chinese journal of Clinical Medicine” January 2008 in “Chinese Journal of Spectroscopy Laboratory” Cysteine formation on hair indicates damage, best detected at pH 4.5.
40 citations
,
May 2016 in “Proceedings of the National Academy of Sciences of the United States of America” Changes in keratin make hair follicles stiffer.
40 citations
,
June 2013 in “Biomaterials” Scientists created 3D hair-like structures that could help study hair growth and test treatments.
13 citations
,
January 2017 in “Cosmetics” Different tests are used to see how hair care products affect hair, and choosing the right test is important for accurate results.
11 citations
,
July 2021 in “Sustainability” Concrete made from animal bones and human hair is stronger and more environmentally friendly than traditional concrete.
1 citations
,
October 2017 in “ecancermedicalscience” Breast cancer alters specific molecular structures in hair, which revert after cancer removal.
April 2026 in “Biomolecules” Squid ink melanin nanoparticles create a safe, long-lasting black hair dye that protects hair and offers UV protection.
September 2021 in “LAUTECH Journal of Civil and Environmental Studies”
June 2021 in “Research Square (Research Square)” Dyed chitin nanofibers are strong, colorful, and water-resistant, enhancing resin strength and color.
7 citations
,
January 2010 in “Animal” Angora goat hair grows faster and produces more protein than cashmere goat hair, and certain hormones and nutrients positively affect hair growth and protein synthesis.
4 citations
,
July 2024 in “Animals” The KRTAP19-5 gene affects wool curvature in Chinese Tan sheep, with Variant B reducing curvature.
The conclusion cannot be provided because the document is not accessible.
Nonlinear artificial neural networks are better at identifying different types of animal hair than linear ones.
36 citations
,
October 2014 in “Langmuir” Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.
1 citations
,
July 2021 in “Forensic science international” Both a lock of hair and a single hair strand can show chronic drug use, but at least six single hairs are needed for accurate results.
September 2025 in “Animals” The KRTAP22-2 gene in sheep does not significantly affect wool traits.
Hair properties change under electromagnetic fields and are influenced by individual characteristics and the environment.
73 citations
,
October 2013 in “International Journal of Cosmetic Science” Chemical hair straightening can damage hair and health, needing safer alternatives and stricter regulations.
26 citations
,
October 1996 in “Journal of Endocrinology/Journal of endocrinology” Goat hair follicles have insulin-like growth factor-I receptors that might affect hair growth, but no melatonin receptors were found.
16 citations
,
January 1977
10 citations
,
May 2012 in “PloS one” Low ERCC3 gene activity is linked to non-pigmented hair growth.
3 citations
,
November 2021 in “Frontiers in Genetics” Certain genes are linked to the quality of cashmere in goats.
1 citations
,
November 2020 in “Research Square (Research Square)” The study found specific skin cells and genes that may affect the quality of cashmere in Liaoning Cashmere Goats.
January 2020 in “Indian dermatology online journal” Hair styling products can damage hair over time.
May 2023 in “Journal of Scientific Research”
262 citations
,
May 2017 in “Nanomedicine” New nanofiber technology improves wound healing by supporting cell growth and delivering treatments directly to the wound.