15 citations
,
  August 2020   in “Analytical chemistry”    Hair lipids do not protect against humidity.  
     
           7 citations
,
  June 2020   in “Experimental dermatology”    Researchers found that certain lipids, especially vitamin D3, are lower in prematurely grey hair than in pigmented hair.  
               4 citations
,
  October 2019   in “Skin Appendage Disorders”    Gefitinib can cause hair and eyebrow darkening.  
               27 citations
,
  May 2019   in “Cosmetics”    The hair cuticle is made of tough proteins that protect the hair, but more research is needed to fully understand its structure.  
               25 citations
,
  May 2019   in “Cosmetics”    18-MEA and cationic surfactants can restore and maintain hair's hydrophobic nature, improving its beauty and feel.  
     
           7 citations
,
  March 2019   in “Journal of cosmetic dermatology”    African hair has the most lipids, while Caucasian hair is more hydrated and stronger.  
     
           12 citations
,
  February 2019   in “Skin research and technology”    White hair has less lipid content and absorbs water differently than brown hair.  
     
           7 citations
,
  April 2018   in “Cosmetics”    Lipids in Japanese hair help maintain glossiness and structure.  
     
           21 citations
,
  March 2017   in “Skin research and technology”    Removing external lipids from hair reduces moisture and increases strength, while removing internal lipids decreases water permeability.  
               16 citations
,
  December 2016   in “ecancermedicalscience”    Hair analysis may help detect breast cancer early by identifying changes in lipid content.  
     
           10 citations
,
  November 2016   in “International Journal of Cosmetic Science”    A tough membrane between the outer and inner layers of human hair protects it from damage.  
               11 citations
,
  January 2016   in “Biointerphases”    The hair's outermost surface has multiple layers of lipids and proteins.  
               20 citations
,
  January 2015   in “Journal of cosmetic dermatology”    Older people's hair cuticles get more easily damaged and lose protective oils, especially in their 40s and 50s.  
     
           18 citations
,
  August 2014   in “Lipids”    Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.  
     
           107 citations
,
  December 2013   in “International Journal of Dermatology”    The document concludes that hair is complex, with a detailed growth cycle, structure, and clinical importance, affecting various scientific and medical fields.  
     
           6 citations
,
  January 2012   in “Breast cancer”    Breast cancer may be detectable through changes in scalp hair lipids.  
     
           42 citations
,
  January 2011   in “Journal of Biomedical Optics”    Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.  
               23 citations
,
  May 2010   in “Surface and interface analysis”    Chemical treatments and UV radiation severely damage the lipid layer on hair.  
               23 citations
,
  October 2007   in “International journal of cancer”    X-ray diffraction of hair might help detect breast cancer non-invasively.  
     
           12 citations
,
  February 2006   in “Lipids”    Hair texture changes with age due to varying levels of lipids.  
               30 citations
,
  November 2005   in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings”    The lipid in human hair follicles acts as a barrier, similar to the skin's lipid layer.  
               41 citations
,
  May 2005   in “International Journal of Cosmetic Science”    Human hair contains various lipids that vary among individuals and help protect the hair.  
               42 citations
,
  January 2005   in “Applied spectroscopy”    Hair from breast cancer patients shows changes in structure and composition, and a test using these changes detected cancer but also falsely identified some healthy samples as cancerous.