Flaccidity is the loss of the skin´s firmness due to the decrease or weakness of supporting tissues, collagen and elastin. Its most frequent location is on the inner side of the thighs, the inner side of the arms, the abdomen and the buttocks. There are several causes: one of the most frequent is the time passing by, the proteins that keep the skin firm and adhered on the muscles are losing effectiveness over the years, in turn there are causes associated with obesity, pregnancies, sudden weight loss or repeated weight changes, a poor protein diet, an excess of carbohydrates and flours, sedentary lifestyle and exaggerated exposure to the sun. There are different methods and techniques that allow to tighten the skin, completely customized treatments to the needs of each patient. These treatments have been shown to tone and tighten wrinkled and flaccid skin on the abdomen, arms, legs and buttocks.