红药水和紫药水对于外治皮肤擦伤和溃烂曾“红得发紫”。但二者的缺点不少,如杀菌力小、污染衣物、影响美观、有些毒性等等。现正逐渐被淘汰。碘酊,俗称碘酒,含碘、碘化钾及乙醇,杀菌力强,刺激性也强,用于皮肤消毒时,还要配合使用75%酒精进行脱碘,不然会烧伤皮肤。另外,碘酊不宜用于破损皮肤、眼及口腔黏膜的消毒。碘伏,优点明显:杀菌作用迅速,对皮肤、黏膜、伤口没有刺激, Red potion and gentian violet for external skin abrasions and ulceration had “red was purple.” However, a lot of shortcomings of the two, such as germicidal power, pollution of clothing, affect the appearance, some toxicity and so on. It is gradually being eliminated. Iodine tincture, commonly known as iodine, iodine, potassium iodide and ethanol, strong bactericidal, irritating and strong, for skin disinfection, but also with the use of 75% alcohol for deiodination, or it will burn the skin. In addition, iodine tincture should not be used to damage the skin, eye and oral mucosa disinfection. Iodophor, the obvious advantages: rapid bactericidal effect on the skin, mucous membranes, wounds did not stimulate,