Is there any downtime after a skin tightening treatment? January 24, 2023 There is some downtime after the Renuvion J Plasma treatment, as patients can expect some mild swelling and bruising in the weeks following their treatment. Patients are encouraged to take a few days away from work and other activities, but can expect to resume most activities within a week of treatment. Mild side effects may persist for a few weeks, but most Houston skin tightening patients have no issues returning to their normal lifestyles before they are fully healed.