The new term “pharmaceuticals” in society is actually skin care cosmetics sold in pharmacies (also known as medical skin care products). The difference between medical skin care products and drugs is that the former are based on natural plants and contain certain efficacious ingredients that can be used under the guidance of a dermatologist for the adjunctive treatment or subsequent maintenance treatment of certain skin diseases; the latter are extracted chemicals that have a therapeutic effect on a particular skin disease or class of skin diseases and must be prescribed by a dermatologist after diagnosis, with certain side effects. The difference between medical skin care products and ordinary cosmetics is that they do not contain fragrances and preservatives that may be irritating or allergenic, and are subject to clinical medical testing, so they are more suitable for people with impaired skin barrier function, such as those with sensitive or intolerant skin. The main purpose of skin care is to make the skin smooth and moisturized and to maintain the normal water content of the skin. It is best to use lotion for oily skin (more water than oil) and cream for dry skin (more oil). Do not use too many skin care products, because the more types of allergies occur, the greater the chance of allergies, to know that external use to absorb many nutrients is not scientific, rich food and good mood, sufficient sleep will make the skin healthy. Please choose and use the right skin care products under the guidance of a dermatologist to keep your skin free from troubles.