The present invention relates to a sanitising medical device having topical activity improved in the process of regeneration of ulcers and wounds, and in the resolution of inflammatory states. This composition comprises an effective amount of an ozonized oil and an effective amount of an essential oil extracted from chamomile and the uses thereof in the cosmetic and pharmaceutical sector. The composition of the invention finds specific application in the disinfection and cicatrisation of skin lesions such as wounds, abrasions, acute or chronic ulcers, and sores of varying origin and nature.