Often associated with breakfast and healthy snacks, oatmeal has also been a staple in the skin care community for centuries. Colloidal oatmeal consists of finely-ground oat grains that can be absorbed in the skin through avenues such as cleansers, lotions, ointments and moisturizers. Unlike your typical breakfast meal, colloidal oatmeal is processed with the whole bran which contains skin-soothing properties. Oatmeal without the bran is not very effective at relieving dry, itchy skin or other skin conditions.