Study on the efficacy and mechanism of an amino acid combination in hair care
The effect of a mixture of amino acids in hair care was studied.The repair effect of this raw material on hair was evaluated by stretching test and combing test.The experimental results showed that,the amino acid combination could increase the tension in the yield zone by 29.4%and reduce the combing work of hair by 22.4%(dry combing)and 18.1%(wet combing).According to the results of spectral characterization,fluorescent penetration test and stress relaxation test,it could be concluded that the amino acid combination could repair the broken bonds by permeating into the hair and thus achieve the effect of toughening,and make the hair lipid transfer to the hair surface,which lead to a repairing effect on the hair surface and improved the hair combability.In particular,it had significant repair effect on the damaged hair caused by perm and hair coloring.
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