The authors present a clinical survey conducted to value the antiseptic and reparative properties of collagenasis (clostridiopeptidiasi A), in the topical treatment of skin lesions. The study presented 90 patients with burns, pressure sores, abrasions and trophic ulcers. The results obtained were highly positive in terms of the healing or cleansing of the wound, bearing further witness to the reliability of the product in question.