How long do the effects of the Shurink procedure last?

I am looking into Shurink lifting because my facial contours seem to be sagging overall. My most important factors are how long the effects last relative to the price. Typically, when do the results appear after the procedure, and how long do they last? Although it varies from person to person, I am curious about the typical interval between treatments—how many months at a time—to maintain skin elasticity. I am also concerned about pain during the procedure; are there any precautions I should take to ensure the effects last longer?