Dermatology is the science that investigates the structure, function and diseases of skin and skin-related parts like hair, nails and sweat glands. It has sub-branches such as venereology (sexually transmitted diseases), photodermatology, dermatopathology, dermatological surgery, paediatric dermatology, cosmetic dermatology.

In dermatological diseases, drug treatment may be recommended to the patient after diagnosis. In addition to drug treatment, dermocosmetic applications also have an important role in the treatment of skin-related problems.