Cosmetic or dermatological preparation based on emulsion comprising molecular oxygen, obtained by mixing the emulsion components and subsequently aerating the preparation with gaseous oxygen and/or oxygen containing gas, is claimed, where the preparation exhibits a temperature of at least 40[deg] C, during the aeration process. ACTIVITY : Vulnerary; Antiinflammatory; Dermatological; Antibacterial; Antipruritic; Antipsoriatic. MECHANISM OF ACTION : None given.