Topical compositions, containing tetracycline, tetracycline salts or tetracycline derivatives, which do not cause skin yellowing, are disclosed. These compositions are formulated such that, upon application to the skin, the tetracycline component recrystallizes in small, irregular crystals at the skin surface. Preferred compositions are buffered at a pH between about 2.0 and 4, such as by the addition of citric acid. The method of treating skin disorders such as acne, using these compositions is also disclosed.
本发明公开了含有
四环素、
四环素盐或
四环素衍
生物的外用组合物,这些组合物不会导致皮肤变黄。这些组合物的配制方式是,在涂抹到皮肤上后,
四环素成分在皮肤表面重结晶成不规则的小晶体。优选组合物的 pH 值在 2.0 至 4 之间,如加入
柠檬酸。此外,还公开了使用这些组合物治疗痤疮等皮肤疾病的方法。