The present invention regards a kit of parts for treating and/or preventing cutaneous ulcers, preferably chronic ulcers, such as for example decubitus ulcers, even more preferably trophic ulcers of the lower limbs, and for treating and/or preventing cutaneous ulcers caused by the Herpes simplex virus, preferably lip ulcers, or cutaneous ulcers that occur in form of Herpes zoster, (shingles), comprising a Croton lechleri resin extract and Melaleuca alternifolia essential oil.