Essentially, it is dependent on your skin elasticity to determine if an additional skin tightening procedure may be needed. Most people in their 20-30s have good elasticity. However, skin tightening is needed if the skin has been stretched out from excessive fat or following aggressive weight loss, or even with natural aging. Renuvion skin tightening may occur if you have minimal to moderate skin redundancy. Excising the skin may be utilized if there is moderate to severe skin redundancy.