The face looks saggy due to the fat being a very important factor in supporting your facial shape, but as you get older the fat will start to change such as: the cheekbone will start to slowly drag down towards the bottom of your face making it look saggy and not in proportion, or the face looking old and having a dry response or worn out. The method in fixing the withering of the skin in the fat layer is that we can use the filler (HA) to lift and fill in the missing fat at the facial structure or area which have sunken or have broken down completely. This makes the skin tighter and the saggy skin will also tighten making a smooth transition with other parts of your face completing the desired dimensions as well as retaining proportion.