Using Polyquaternium-64 to Condition Damaged Hair

    January 2004 in “ Cosmetics and toiletries
    Kunio Shimada, Katsumi Inomata, Sreekumar Pillai, James Hayward
    Studysummary Polyquaternium-64 helps damaged hair look healthy again.
    Our plain-language summary. Not medical advice or a treatment recommendation. Consult a qualified healthcare professional before changing treatment. Full disclaimer
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