The purpose of this PMCF investigation is to determine whether there are differences between the two formulations (Dermatix and Dermatix Ultra) in improving keloid and hypertrophic scars clinical symptoms and in the overall scar perception (including scar appearance and treatment perception).

This PMCF investigation has been designed to address the conclusions of the latest CER [PDPROJ-4-CE-R] and the objectives. It has been chosen as an appropriate activity as it enables the collection of device-specific data on both device formulations and on the entire intended population. Moreover, the design of the PMCF investigation (single-center, parallel, open-label, two-arm, randomized controlled study) enables the direct comparison of the clinical performance/benefit between the two formulations.

Inclusion Criteria:

• Patients aged >3 years.
• Patients with keloids and hypertrophic scars (such as those resulting from general surgical procedures, trauma wounds, and burns), i.e., older scars.
• Patients at risk of developing keloids and hypertrophic scars, i.e., recent scars.

Exclusion Criteria:

• Patients with unhealed and/or open wounds.
• Patients with allergies to any of the ingredients.
• Pregnant or breastfeeding women.
• Patients using other topical skin treatments on/around the scar area.

The total number of subjects will be 75 per arm (150 total). However, to allow for potential dropouts and protocol deviations, the planned enrolment will be increased by approximately 10%, yielding a total of 84 per arm (168 total).

To ensure that both treatment groups include patients with (a) scars at risk of developing hypertrophic or keloid scars (i.e., recent scars) and (b) pre-existing hypertrophic or keloid scars (i.e., older scars), a stratified randomization procedure will be used. This approach will evenly distribute the proportion of older scars and recent scars between the two groups based on the estimated prevalence of pathological scars in the overall scar population.