Stretch marks are shriveled marks. Shrinking is a phenomenon that skin fibers break during pregnancy, fitness and sudden weight gain, showing red, white or purple stripes. It also includes obesity lines and motion cracks. In addition to the abdomen, there are body parts such as the inner and outer thighs, knees, buttocks, lumbosacral and so on.

Do you see it? Stretch marks are only part of wrinkles. It may also appear on the stomach, because it used to be very fat, but now it has lost a lot of weight, and the stomach has changed from big to small, and then the skin can't shrink, and the so-called "stretch marks" appear. You can search for a lot of particularly obese people, and then lose weight successfully, and your skin will have wrinkles, because the skin is not elastic enough to shrink.

Of course, there are other reasons for wrinkles.