TLDR Polyquaternium-64 helps damaged hair look healthy again.
The document discussed the use of polyquaternium-64, a quaternary ammonium polymer, to condition damaged hair. The study was conducted by researchers from NOF Corporation in Japan and Engelhard Corporation in the United States. The findings indicated that polyquaternium-64 effectively improved the condition of damaged hair by enhancing its manageability, smoothness, and overall appearance. The research was published in the journal "Cosmetics and Toiletries" in 2004 and included 11 references.
4 citations,
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