This is a single center, double-blind (patient and investigator), randomized, placebo-controlled study with a split-lesion design.All study procedures will be performed at the Department of Dermatology, Erasmus MC Medical Center in patients referred for scar treatment to our outpatient clinic.~Clinical photos will be obtained after signing the informed consent form by patient and investigator. Study visits and clinical assessments will be scheduled at baseline, 4 weeks, 8 weeks, and 12 weeks. Measurements include clinical photography, scar volume measured by 3D-camera, POSAS questionnaire, laser speckle contrast imaging to visualize keloid scar vascularization, measurement of residue formation on the skin, and a treatment related questionnaire. The keloid will be divided into two treatment areas, and randomly assigned to three consecutive treatments of: a) bleomycin and b) placebo (saline (NaCl 0,9%)), administered with an electronic pneumatic jet injector.
This is a single center, double-blind (patient and investigator), randomized, placebo-controlled study with a split-lesion design, in which selected keloids will receive three consecutive treatments of a) bleomycin and b) placebo (saline (NaCl 0,9%)), administered with an electronic pneumatic jet injector.