Fractional Radio frequency has been proven an effective and safe tool for both skin rejuvenation and acne scarring. The idea was to heat the dermis to 50-52 deg celsius to trigger collagen remodeling. The first generation of technology used in ematrix allows minimal surface ablation with shallow dermal heating. The latest RF technology applied in the Endymed systems uses non insulated gold plated RF micro needles that reach up to 3500 microns into the skin. The depth of the treatment allows a significantly higher than other devices , especially for acne scars. Special built in electronics allow a minimal pain procedure with minimal to no downtime in all skin types. Multiple laboratory and clinical studies were performed with the Intensif Endymed Pro handpiece. Latest one proving high efficacy one acne scars can be found on : Journal of Cosmetics, Dermatological Sciences and Applications, 2014,4,212-218 (Depressed Acne Scars - Effective, Minimal Downtime Treatment with a Novel Smooth Motion Non-Insulated Microneedle Radiofrequency Technology) .