Inclusion Criteria:  Subjects suffering from deep burns who have been surgically treated with autologous skin graft, whose failure has been total or partial; The surface of the non-taken skin graft must be between 0.5% and 5.0% of the body surface; Men and women aged ≥ 18 years; The patient must be able to understand the purpose of the Clinical Study and provide their Informed Consent in writing.  Exclusion Criteria:  Patients who are participating in other clinical trials with drug or medical device; Patients who are unable to understand the aims and the objectives of the study; Patients with burns with TBSA greater than 50%; Patients with a history of self-harm who can voluntarily alter the course of healing; Patients with psychiatric disorders; Women who are pregnant or breastfeeding (the state of pregnancy or breastfeeding will be certified on the basis of the patient's declaration); Patients with cancer; Patients with pathologies that induce photosensitization of the skin; Patients with limited life expectancy.