Power Col Tra is product for lose skin and for face volume. Great for ppl who lost elasticity and volume (for skin tightening, wrinkles). Product stimulate collagen in deep SMAS layer to naturally maintain face volume! Promote overall volume growth in the face area and the creation of new collagen in the skin. In the beginning, it is good to make it strong and powerful, and you should massage it in a circle around the treatment area. These massages can spread out in one place without clumping into one place, which can have a more satisfying effect and also reduce concerns about side effects. Last up to two years!