Skin type is primarily based on what factors?

Skin type is primarily determined by the oil production of the sebaceous glands and the lipid amounts between skin cells. This means that the balance of oils in the skin significantly affects its overall characteristics, such as whether it is classified as normal, oily, dry, or combination. When the skin produces an adequate amount of sebum (oil), it maintains moisture and flexibility, which contributes to a healthy skin appearance.

Lipid levels between cells also play a crucial role in skin hydration and barrier function. A well-functioning lipid barrier helps to retain moisture and protect against environmental aggressors, whereas an imbalance can lead to conditions like dryness or excessive oiliness. Therefore, understanding oil production and lipid levels helps professionals determine the skin type and tailor appropriate skincare routines or treatments.