对于那些希望执行专业程序或向客户和患者提供咨询的人来说，护肤是一个很好的学习领域。它可能包括医疗和化妆方面，以及各种各样的提示和技巧，以照顾不同类型的皮肤。

Courses are academic classes taught by qualified instructors that are intended to enhance participant’s knowledge of a given area or training in a particular discipline. Courses vary broadly in terms of length, size, content and duration.