(I) With age, exposure to the elements and pollution, skin loses its natural oils which keep it supple and young-looking. (II) As a result, its colour changes and it becomes loose and dry.(III) Another sign of aging is the shrinking of bone and muscle tissue, giving the impression that old people actually decrease in stature. (IV) Moreover, premature wrinkles form on the surface, especially if one has spent too much time in the sun. (V) This can all be avoided until middle-age if you use a moisturiser regularly to replenish the skin's lost oils.