Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.
1 citations,
January 2009 in “Journal of S C C J” Changing disulfide bonds in human hair affects its melting behavior and thermal stability.
March 2010 in “International Journal of Cosmetic Science” Disulfide bonds affect the melting behavior of hair's crystalline structure, but hair retains some stability even after these bonds are broken.
49 citations,
September 2008 in “International journal of pharmaceutics” Artificial sebum L closely mimics human sebum for drug delivery research.
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.