Stretch marks are often also called expansion lines, and they can appear not only after childbirth, but also in some people who become obese or grow taller for a short period of time during puberty, in the thigh area and abdomen, and even on the upper arms. Stretch marks, also known as expansion lines, is the breakage of the fibers under the skin, the growth of the skin can not reach the rapid growth rate of the abdomen, the subcutaneous fibers begin to break the lines. There are several ways to get rid of swelling lines: 1, if it is the early stage, first take the weakest effect, you can use the topical products or creams containing retinoic acid preparations, retinoic acid can be an effective anti-aging, can make the skin tight, with a certain restorative effect; 2, you can use a more radical, more effective treatment, such as fractional laser, now there are many non-exfoliative fractional, such as 1565nm or 1440nm, etc., after hitting the non-scabbing fractional laser equipment will also promote subcutaneous collagen regeneration, so that the cracked skin better recovery; 3, you can use micro-needle method, micro-needle including micro-needle radio frequency, such as the current gold micro-needle, micro-needle local stimulation will also promote the subcutaneous collagen newborns, and the rolling needle combined with nutrient input, to promote the newborn of the subcutaneous collagen, to repair the expansion lines have been formed. However, since the swelling lines have been formed, generally need to carry out several treatments, will gradually improve, do not want to make the swelling lines through a certain means at once completely subside. For particularly severe swelling lines and abdominal laxity, a plastic surgery abdominoplasty can be sought to rejuvenate the skin.