The elimination method of thigh expansion lines varies depending on the length of time it takes to form, as follows: 1. If it is just formed or expansion lines are in a red appearance, that is, feeling more obvious inflammation, you can properly use red and blue light treatment. Red and blue light treatment is a relatively advanced physical therapy, mainly through the red light heat penetration as well as blue light stimulation, promote the formation of collagen, promote the local skin to produce elastic fibers and collagen fibers, play a certain role, have a very good role in repairing the skin; 2, the formation of swelling lines for a longer time, the color may become lighter, this time you can use the hydrophobic needle, fractional laser or radio frequency and other treatment methods, treatment After that can improve the appearance of swelling lines to the maximum extent.