Acne scar treatment- UltraPulse Laser & Genius RF needling - what's the duration of results?

I had distributed over a year 2 fractionated ablative CO2 laser treatments with the Ultra Pulse Laser from Lumenis and 6 treatments with RF Needling Genius. The last treatment is 3 months ago and I am very satisfied with the results, the scars are no longer visible for me. Is this end result of treatments permanent if no new scars are created by recurring acne? Or do the scars become visible again after some time and therefore need to be treated with a laser for the rest of your life?