DBV Technologies S.A. is engaged in the research, development, and marketing of products for the diagnosis and treatment of allergies, primarily food allergies in young children. The company provides Diallertest, a non-invasive patch allergy diagnostic for infants, children, or adults for the diagnosis of allergy in cow milk, wheat, and soybean. Its products include Viaskin Peanut, an immunotherapy product for the treatment of patients with peanut allergies; Viaskin Milk, for the treatment of CMPA and eosinophilic esophagitis, as well as food polyallergies; and Viaskin House Dust Mite, a mite desensitization product for the treatment of mite allergy. The company was founded in 2002 and is based in Bagneux, France.