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This study found that polyquaternium-68 at pH 9 achieved the greatest hair deposition, while polyquaternium-44 demonstrated the best wash resistance at pH 6.

This source highlights the utility of cationic polymers in haircare products for protecting against hair damage from chemical treatments and grooming, and describes how microfluorometry can measure polymer deposition and penetration on hair fibers.

In an animal study, researchers observed that a Chromolaena odorata layered-nitrile rubber transdermal patch significantly improved wound contraction, protein, hexosamine, and uronic acid levels, and collagen deposition in healing excision wounds in rats compared to a control group with an empty patch.

The study found that a polymer treatment changes the charge on hair surfaces, making bleached hair smoother and less porous.

This study found that modern styling cosmetics can significantly alter hair structure through changes in interfacial chemistry and cohesion, particularly when applied to already damaged hair.