613418 Use of a compound represented by the formula I for preparing a medicament for the treatment of free radical damage to the skin, treating fine lines, wrinkles or surface irregularities of the skin, treating hair loss in a patient suffering from unwanted hair loss, treating hypoxia or treating an age-related disorder in a patients wherein the disorder is selected from the group consisting of: diabetes, cataracts, Alzheimer&rsquos disease, Parkinson&rsquos disease, macular degeneration, retinal ulcers or retinal vasculitis. Compounds of formula I include: 2-methoxy-3-(4&rsquo-aminophenyl) propionic acid, 2-ethoxy-3-(4&rsquo-aminophenyl) propionic acid, and 2-hydroxy-3-(4&rsquo-aminophenyl)propionic acid