 This is a Phase IIa, randomized, double-blind, placebo-controlled, intra-individual left-right limb comparison trial to investigate the efficacy, local irritation, safety, tolerability and pharmacokinetics of multiple topical applications of ImCOOH cream. The trial population will consist of 25 patients with moderate atopic dermatitis. Twenty patients will receive a hydrophilic cream containing 10 ImCOOH and a placebo cream randomized over both limbs twice daily for 14 days with an additional morning application on Day 15. Five patients will receive placebo cream on both limbs twice daily for 14 days with an additional morning application on Day 15. The creams will be applied on 2 comparative target areas minimum 0.1 and maximum 2 of the total body surface area per target area, with one site at the left limb and one site at the right limb. The applied creams needs to be prevented from wiping off. Efficacy will be assessed until Day 15 and safety and tolerability will be monitored until 14 days after the last application. 