Despite its continual renewal, the epidermis undergoes an ageing process which consists basically in becoming thinner and stiffer. The causes for this are genetic and environmental. Genetic factors are consistent throughout life and unchangeable, while environmental ones are changeable and affect ageing considerably. Among the latter, sun radiation and exposure to strong wind play a major role, as easily detected in the skin of sailors, fishermen and farmers. Thus, exposure to the sun’s rays should be gradual and supported by so-called "total" sun screens, specially in the very first days. Following exposure, moisturizing creams should always be applied especially to dry skin. Reddening and dryness of the skin should be avoided. Due to physical or hereditary factors, cases may occur of fifteen-year-old people with wrinkles and sixty-year-old people with intact, wrinkle-free skin. Obviously, these are rare cases. Due to ageing, the dermis undergoes changes as to the number of its cells and the content of elastic tissue. Young dermis produces a connection different to that of older dermis. In aged dermis, the renewal rate decreases, the replacement of old fibers is slower and tissues grow increasingly thicker. In other words, the older an individual grows, the more the fibrous component of the skin increases with respect to the elastic one. The hypodermis may also undergo alterations resulting in cellulite. For all the above reasons, it is necessary to continually use the most suitable cosmetic means to solve the disorders caused by alterations in various skin areas.