The formation of stretch marks is mainly due to the influence of hormones during pregnancy. In addition, the swelling of the abdomen causes the elastic fibers and collagen fibers of the skin to be damaged or broken, and the skin on the abdomen becomes thinner and thinner, and there are some pink or purple reds with different widths and lengths. Wavy pattern. After childbirth, these patterns will gradually disappear, leaving white or silver white shiny scar lines, namely stretch marks. Stretch marks mainly appear on the abdominal wall, but may also appear on the inner and outer thighs, buttocks, chest, back waist and arms. The most obvious is the primipara.
