Background. Aged skin is the sum of chronological und UV-induced aging. Light-exposed skin is unattractive, with irregular pigmentation, roughness und scaliness. The skin is often dry and itches. Methods. The present paper provides an overview of diseases of aging skin and describes how to prevent or reduce disease by prophylactic and therapeutic skin care. Results. Aged skin can develop into several skin diseases, e.g., different types of eczema and skin cancer. In the body folds we often find an irritant contact eczema caused by friction from skin to skin, sweating, and urinary and fecal incontinence. In the bedridden, bed sores can also develop. Furthermore, there is a delay in wound healing owing to old age. Use of adequate creams and ointments is very helpful in preventing and improving most skin diseases of mature skin. However, the knowledge of aged people and healthcare professionals about the importance of skin care is low. Older people are often unable to care for their skin because they are lacking the physical and mental ability. Conclusion. Healthcare professionals are not sufficiently trained about the value of proper skin care. Adequate studies on the role of skin care and selection of the correct preparation in various aged-related diseases are lacking.