Vivace is great for skin tightening. It will decrease your wrinkles and fine lines. It improves skin texture and minimizes the appearance of visible pores. As far as it replacing a neck lift, it really depends on the condition of your neck. If you are experiencing early skin changes and have healthy skin, this is an ideal procedure and you do not need a neck lift. If you have advanced skin aging as a result of your genes, your age, and your habits like sun exposure and or smoking, a noninvasive treatment is not your best option. I recommend meeting with an experienced provider who also offers other treatments like fractional CO2 laser resurfacing and threads as other neck treatment options. Wishing you the best, Dr. Bonakdar