There are four basic types of healthy skin: normal, dry, oily and combination skin. Skin type is determined by genetics. The condition of our skin can, however, vary greatly according to the various internal and external factors it is subjected to.
Several criteria are used to classify the different types of skin1. For example, Fitzpatrick’s classification is based on skin color and its response to sun exposure. It is used to determine the proper type of sun protection factor or to predict the risk of skin damage among others. However, from a cosmetic point of view, skin is classified according to several factors related to its balance: sebaceous secretion, hydration and sensitivity level. Thus, each type of skin will have its own characteristics and require different cares. The type of skin is determined by genetics, although it will also be affected by other factors and can change with time.
Based on these characteristics, there some types of healthy skin: normal, dry, oily, combination (both oily and dry skin) and sensitive.