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Abstract:Morphological properties of flocculation in anti-dandruff shampoo, deposition of zinc pyrithione (ZPT) on human skin as well as combing performance of human hair were examined. Effect of particle size of various cationic polymers and silicones with respect to uniformity of ZPT covering and deposition were compared. The results showed that since the co-existence of small-size silicone particles (SPS) in the system and over-flocculation of ZPT, most of cationic polymers are not suitable to be used in anti-dandruff shampoos; while surface modified cationic guar which helps to avoid formation of over-flocculation, can provide better conditioning performance and deliver high effective deposition of ZPT in SPS anti-dandruff shampoo. For anti-dandruff shampoo with large particle size silicone (LPS), the deposition effect of ZPT is direct proportional to the charge density and molecular weight of cationic polymer in the shampoo.
文章编号： 中图分类号：TQ658.3 文献标志码：
|NIU Li-juan||Shanghai Technical Center, Ashland Specialty Ingredients|