Effects of Semi-Permanent Hair Dyes and Conditioning Polymers on the Color Enhancing Properties of Shampoo Formulations
November 2016
in “
University of the Arts London Research Online (University of the Arts London)
”
Studysummary This study concluded that adding polymeric conditioning actives to shampoos improved color retention in permanently dyed hair, while additional cationic dyes at certain pH levels weakly dyed the hair directly.
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