Treat lax skin on your jowl, cheeks, forehead, eye-region, neck, and décolleté with Reaction. We can also target stretch marks on other areas of the body with this treatment. Gentle and safe, the treatment is non-surgical, and requires no downtime afterwards and no medications. The Reaction skin tightening procedure utilizes RF energy to stimulate existing collagen and elastin fibers, enhance collagen secretion, and improve skin’s elasticity over time. From the very first treatment, collagen fibers are contracted, giving an immediate firmed and tightened appearance.