22 citations
,
January 1985 Water makes hair more flexible, especially the outer layer.
4 citations
,
November 2016 in “The Journal of Dermatology” Pili torti hair is fragile due to loose keratin filaments and weak disulfide bonds.
Hair feels different when touched and rubs together in various ways.
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.
6 citations
,
December 2011 in “Clinical and Experimental Dermatology” A woman developed rare, unexplained curly hair on her scalp and eyelashes.
6 citations
,
December 2018 in “International Journal of Cosmetic Science” CARB is a strong barrier in human hair that prevents dye penetration.
2 citations
,
January 2002 in “PubMed” The new test shows how hair treatments affect hair's bending stiffness by swinging a pendulum through hair fibers.
125 citations
,
February 1971 in “Biochemistry” Specific cross-linkages help make hair proteins stable and strong.
19 citations
,
March 2012 in “Journal of experimental botany” Arabidopsis collet hairs are good for studying nuclear movement and DNA content increase during growth.
1 citations
,
January 2017 in “Science” A new method was developed to create complex molecular knots using iron ions.
17 citations
,
November 1967 in “American Journal of Anatomy” Hairless mice have longer hair follicles and abnormal structures during the catagen phase.
20 citations
,
December 2010 in “Journal of Morphology” Lizard claws have hair-like keratins similar to those in mammals.
8 citations
,
May 2005 in “The American journal of dermatopathology/American journal of dermatopathology” The hair defect is due to abnormal inner root sheath keratinization.
90 citations
,
July 1993 in “Journal of Investigative Dermatology” 7 citations
,
July 2025 in “The Journal of Physiology” C-tactile nerves are sensitive to hair movement.
49 citations
,
January 1972 in “Biochimica et Biophysica Acta (BBA) - Protein Structure”
September 2016 in “Journal of Dermatological Science” Björnstad syndrome causes twisted hair from birth.
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.
12 citations
,
September 2013 in “BMC Biophysics” Keratin filaments' elasticity is influenced by their terminal domains and surrounding medium.
43 citations
,
July 1994 in “Journal of Cell Science” Cross-linked proteins help maintain the structure of hair, feathers, and hagfish teeth.
28 citations
,
December 2010 in “Langmuir” Hair fibers interact through classical forces, which are influenced by treatments and products, important for hair care and other applications.
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.
40 citations
,
March 1991 in “Journal of Investigative Dermatology”
25 citations
,
May 1994 in “Journal of Investigative Dermatology” Researchers found a new gene, hacl-1, that is active in mouse hair follicles during hair growth and may be important for hair biology.
February 2020 in “Oxford University Press eBooks” The alpha-helix was confirmed as a key structure in proteins.
4 citations
,
July 2022 in “International Journal of Cosmetic Science” Hair moisture behavior helps tell apart different chemical treatments and reveals insights into hair structure.
11 citations
,
January 1997 in “Journal of Dermatological Science” A new protein linked to hair strength was identified, aiding in understanding brittle hair conditions.
24 citations
,
November 2015 in “Scientific reports” Human hair has a new region with ordered filaments and the cuticle contains β-keratin sheets.
Cassia HPTC is an effective hair conditioner, better than some traditional options.
38 citations
,
July 1993 in “Journal of Investigative Dermatology”