"For the first time in two years, your members and doctors have suggested a cause for my medical problem that actually makes perfect sense to me." - Diana E . Acne and Skin Disorders Forum. • Take some orange peels, . Keratin is a fibrous scleroprotein whose blockages of keratin cause to occur deep into the narrow follicles, where it is not possible to remove them by washing. It's important to remember that by itself, sebum does not cause acne. Neither do the two strains of bacteria associated with acne, . Is Orange Really Healthy? For example, it could kill the bacteria that cause (P. acnes) but it could also contribute to by clogging pores. Without some kind of test data it’s all speculation and hearsay. Matthew, a 33-year-old from Jamaica Plain, has battled since adolescence. . Anything with concentrated sugar or caffeine, from.