June 2016 in “한국디자인문화학회지” UVA damages all hair types, especially permanently waved and colored hair.
June 2023 in “British Journal of Dermatology” A person with Werner syndrome was initially thought to just have female pattern hair loss.
16 citations
,
October 2003 in “Journal of applied polymer science” 2-iminothiorane hydrochloride improves hair waving permanence without damage.
15 citations
,
January 1998 Frequent blow-drying causes cracks and breakage in hair cuticles.
9 citations
,
July 2014 in “Skin research and technology” Stretching damages Caucasian hair's structure more easily than Asian hair.
Hair movement can indicate hair quality and health.
July 2023 in “SAS journal of medicine” Certain hair styling methods, like weaving and straightening, are a main cause of hair loss in women from Bamako.
74 citations
,
January 2013 in “Journal of Investigative Dermatology” Four genetic risk spots found for hair loss, with WNT signaling involved and a link to curly hair.
January 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The herbal hair wax stick is a safe and effective natural alternative to synthetic styling products.
May 2023 in “Elsevier eBooks” Wigs and hair prosthetics boost confidence and quality of life for people with hair loss.
21 citations
,
June 2023 in “Proceedings of the National Academy of Sciences” Tightly curled scalp hair helps reduce heat from the sun, protecting against overheating.
78 citations
,
June 2003 in “Journal of the American Academy of Dermatology” Curly hair shape is determined by the hair bulb.
4 citations
,
August 2014 in “Journal of molecular structure” Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.
January 2008 in “대한미용학회지” UV exposure severely damages hair, making it rough and weak.
January 2022 in “Surgical & Cosmetic Dermatology” Isotretinoin can rarely cause hair to grow curly.
February 2023 in “European biophysics journal” 7 citations
,
January 1990 29 citations
,
July 2015 in “Journal of Medical Genetics” A genetic variant in the KRT25 gene causes tightly curled hair.
21 citations
,
October 2006 in “International Journal of Dermatology” Asian hair is stronger and more damage-resistant than Caucasian hair due to a thicker cuticle layer.
October 2024 in “UNESP Institutional Repository (São Paulo State University)” Straightening and dyeing damage hair structure.
January 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The herbal hair wax stick is a safe and effective natural alternative to synthetic hair products.
2 citations
,
January 2011 Relaxers straighten African hair by breaking down its helical structure using strong bases.
12 citations
,
February 2006 in “Lipids” Hair texture changes with age due to varying levels of lipids.
49 citations
,
April 2007 in “Pediatric Dermatology” Biotin improved hair appearance in uncombable hair syndrome but didn't change hair structure.
3 citations
,
July 2003 in “PubMed” The research found a way to measure hair surface changes by analyzing how light reflects off of it, and determined hair cuticle angles vary by hair length and color.
33 citations
,
September 1987 in “American Journal of Medical Genetics” Uncombable hair is inherited dominantly with complete penetrance.
2 citations
,
July 2019 in “Cosmetics” Beautiful hair is flexible and elastic due to its unique double-layered structure and can be enhanced with succinic acid treatment.
1 citations
,
April 2021 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” Aspartic acid at 0.75% makes perms more effective and less damaging to hair.
Acidic sandy clay damages archaeological hair the most, while dry conditions preserve but make it brittle; silicone oil can help keep the hair flexible.
33 citations
,
August 1985 in “Archives of Dermatology” Acquired Progressive Kinking of Hair is likely an early sign of male pattern baldness.