Treatment of Fibrotic Scars With Rapid Acoustic Pulse (RAP) Device

Inclusion Criteria: 1. Male or female 18 years of age or older at the screening visit. 2. The participant is healthy, as determined by the investigator based on a medical evaluation including medical history. 3. The participant has a fibrotic scar (keloid or hypertrophic scar) that is easily delineated photographically located on the chest, back, trunk, upper arms or upper legs. 4. Scar must be located an essentially planar surface. 5. Scar size preferably between 2.5 cm2 and 5 cm2. 6. Preferably, the scar length is greater than 25 mm; and height greater than 2.5 mm. 7. Scar less than 5 years old. 8. Participant is willing to forego any other scar treatments until complete with study participation. 9. Participant is willing to participate in study and adhere to follow-up schedule. 10. Participant is able to read and comprehend English. Regardless of the above, the final decision on scar inclusion will rest with the PI. Exclusion Criteria: 1. Participant is sensitive to loud sounds 2. Participant had treatments, including topical steroids, to the scar being treated in the study in the prior 12 months. 3. Participant is unwilling to have research photos taken of treatment areas in the presence of Sponsor's researchers. 4. Participant is unwilling to have RAP treatment provided in the presence of Sponsor's researchers. 5. Participant is pregnant or planning to become pregnant during the duration of the study. 6. Metal or plastic implants near the area of the treatment (vascular stent, plates and screws, chest wires, hips, knees, elbows, etc.). 7. Active electronic implants such as pacemakers, defibrillators, cochlear implants, nerve/brain stimulators, drug pump, etc. 8. Medical disorder that would hinder the wound healing or immune response (no blood disorder, etc.). 9. History of coagulopathy(ies) and/or on anticoagulant medication. 10. Skin disorders (skin infections or rashes, extensive scarring, psoriasis, etc.) in the treatment area. 11. Current smoker. 12. Any surgical procedure in the prior 3 months, or planned during the duration of the study. 13. Any issue that, at the discretion of the Investigator, would interfere with assessment of safety or efficacy or compromise the participant's ability to fulfill study obligations 14. Treatment with another investigational device or agent within 30 days before treatment or during the study period