Evaluating Effects of Skin Needling Treatment on Visible Changes and Elasticity of Scars Using High-Frequency Ultrasound, Cutometer, and Standardized Questionnaire-Six Case Studies.

: Scars are formed from trauma to the dermis and more specifically during the wound-healing phase. Skin needling is a technique used in scar therapy which stimulates the skin to regenerate. The aim of this study was to objectively and subjectively evaluate the degree of scar reduction after skin needling treatments based on visible changes using specialized measuring devices-ultrasound, Courage & Khazaka, and standardized questionnaires. : Six patients were enrolled. Participants were given a series of three skin needling treatments. Before and after the treatment, the participants were examined for selected skin parameters with the help of specialized measuring devices such as Courage & Khazaka and skin ultrasound. Skin firmness and elasticity and MEP and HEP skin echogenicity were taken into account. Each patient completed POSAS questionnaires on satisfaction, pain, and adverse effects. : Based on the results of the POSAS questionnaire, a significant improvement in patients' scar evaluation was observed after the treatment. Patients reported the most noticeable improvements in parameters such as color ( = 0.035), stiffness ( = 0.009), thickness ( = 0.041), and irregularity (0.007). An improvement in scar elasticity was observed in all subjects after treatment. : Skin needling treatment combined with the skin needling technique and post-treatment skincare is an effective method of scar therapy, and the risk of side effects or complications after a series of treatments is low.