17 citations
,
  June 2012   in “Journal of experimental zoology. Part B, Molecular and developmental evolution”    Hair in mammals likely evolved from glandular structures, not scales.  
               16 citations
,
  May 2017   in “Journal of cosmetic dermatology”    An unhealthy scalp can damage new hair, but using ZPT shampoo can improve hair health.  
     
           8 citations
,
  December 2003   in “Materials Research-ibero-american Journal of Materials”    Polyquaternium 7® builds up on hair, improving its look and feel, and AFM is good for measuring these changes.  
     
           3 citations
,
  January 2015   in “Mathematical problems in engineering”    Hair damage increases significantly with higher temperatures and longer heating times.  
     
           1 citations
,
  July 2019   in “Microscopy Today”    Microfluorometry effectively measures how much polymer coats and penetrates hair, useful for evaluating hair products.