Roseomonas is a genus of Gram-negative, coccoid rods bacteria. Most species of Roseomonas form pink to light red pigmented colonies when grown on culture medium. Scientists have developed a method of treating or preventing atopic dermatitis via the topical application of selected probiotic strains of Roseomonas mucosa bacteria. This approach has been shown to be beneficial in a pre-clinical mouse model of atopic dermatitis.