this invention relates to a method for treating skin damage , comprising the step of administration of a pharmaceutical or dermatological composition of basic milk factors to the area of the skin of a subject in need of such treatment . the invention further relates to a method for cosmetically treating the aged appearance of skin . the skin damage may be the result of normal biological ageing , environmental factors , dermatological disorders , medical treatments , surgical treatments and / or medical conditions . the aged appearance of skin may be attributed to wrinkles , blemishes , sagging , hyperpigmentation , changes to skin thickness and / or a rough appearance . in a preferred embodiment , the subject in need of such treatment requires the enhancement of the youthful appearance of their skin . the invention further relates to compositions for the treated of these conditions .