Rushton H, Gummer C L, Flasch H
University of Portsmouth, UK.
Skin Pharmacol. 1994;7(1-2):78-83. doi: 10.1159/000211278.
Consumers have expressed a need for cleaning and conditioning in one step. Conventional shampoo technology using anionic surfactants and cationic conditioners results in charge interaction and complexing of the ingredients. Neither shampoo nor conditioners achieves the desired result. The successful solution was to incorporate charge neutral dimethicone conditioning ingredients, suspended as microfine droplets within complex crystal lattices, into anionic surfactant shampoo technology. The same solution has also been applied to amphoteric surfactant systems. This provides complete cleaning, and hair conditioning fully equal to separate conditioners without the problems of sebum interactions and conditioner build-up. This was achieved by keeping the dimethicone in suspension throughout the shampoo process. During rinsing, excess water breaks the crystalline lattice and allows deposition of the dimethicone droplets onto the hair. Full cleaning and conditioning are, therefore, achieved in one application. Dimethicone build-up is not encountered as subsequent washes first remove soil and previously deposited dimethicone. Neither do neutral dimethicones show any reactions with sebum. The development of effective 2-in-1 technology has had a major impact on shampoo technology and consumer habits and practices. This has significantly changed the way consumers care for their hair.
消费者表示需要一步完成清洁和护理。使用阴离子表面活性剂和阳离子调理剂的传统洗发水技术会导致成分之间的电荷相互作用和络合。洗发水和调理剂都无法达到理想效果。成功的解决方案是将电荷中性的聚二甲基硅氧烷调理成分以微滴形式悬浮在复合晶格中,融入阴离子表面活性剂洗发水技术。同样的解决方案也应用于两性离子表面活性剂体系。这既能实现彻底清洁,又能提供与单独使用调理剂完全相同的头发护理效果,且不存在皮脂相互作用和调理剂积聚的问题。这是通过在整个洗发过程中保持聚二甲基硅氧烷处于悬浮状态来实现的。冲洗时,多余的水分会破坏晶格,使聚二甲基硅氧烷微滴沉积在头发上。因此,一次使用就能实现彻底清洁和护理。由于后续洗涤首先会去除污垢和先前沉积的聚二甲基硅氧烷,所以不会出现聚二甲基硅氧烷积聚的情况。中性聚二甲基硅氧烷与皮脂也不会发生任何反应。有效的二合一技术的发展对洗发水技术以及消费者的习惯和做法产生了重大影响。这显著改变了消费者护理头发的方式。