Analysis of Keratin Films as Screening Tools for Predicting the Efficacy of Potential Hair Dyes
June 2019
in “
Coloration Technology
”
Studysummary This research found that translucent keratin films absorbed more dye than opaque films, suggesting they may serve as better screening substrates for evaluating hair dye effectiveness.
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The study explored the use of keratin films as a screening tool for predicting the efficacy of potential hair dyes. CI Acid Orange 7 dye was applied to both opaque and translucent keratin films. Time-of-flight secondary ion mass spectrometry images showed uniform dye penetration in both film types. However, ultraviolet-visible analysis indicated that the translucent film had a higher dye concentration. Scanning electron microscopy suggested that the higher porosity of the opaque film led to more dye desorption during rinsing. Thus, the translucent film was deemed a better substrate for screening new hair dyes.
