The joy of the birth of a new baby brings new mothers joy and makes the hardships of carrying a baby in October quickly become a thing of the past. When you take your eyes off the baby and look at your body again, you find that your once smooth and tender belly is now covered with stretch marks. So, moms and dads are coming to our doctors to help them restore their skin to its pre-pregnancy state. Stretch marks are caused by the hormonal effects of pregnancy, which damage or break the elastic and collagen fibers in the abdomen, making the abdominal skin thinner and thinner, and resulting in wavy patterns. After childbirth, the pattern gradually disappears, leaving white or silvery-white lines. The shade, color and number of stretch marks are mostly related to the body type. The probability of stretch marks can also be reduced if proper care is taken during pregnancy or if body lotion or wrinkle remover cream is applied. However, most of the stretch marks that have already formed after delivery are difficult to be seen by applying some kind of maintenance products on the epidermis. For the solution of stretch marks and obesity lines, some beauty institutions have developed solutions such as applying A acid, laser and lipolysis, but their effect varies because they act on the epidermis. The key to eliminating stretch marks and obesity lines still lies below the dermis! As mentioned before, the formation of stretch marks is due to the damage or breakage of elastic and collagen fibers in the abdomen, that is to say, the lines of stretch marks are caused by the same reasons as the lines (wrinkles) that arise on the face, especially the neck lines are even more similar to stretch marks, which are caused by the loss, propping up and breaking of collagen. However, due to the hormonal influence, the belly is stretched out during pregnancy and the water in the tissues increases rapidly, making the stretch marks brown or red and wavy, which is scary. Stretch marks mostly appear on the abdomen, buttocks and inner thighs. There is also an obesity mark that forms similarly to stretch marks. Therefore, beauty lovers who are plagued by obesity suffer from these wavy lines on their bodies as much as the baby mothers. What we can do is to help them] fade and eliminate them. Instead of going under the knife for reconstructive surgery, the pain of stretch marks can be solved with dermal matrix therapy. For example, the nutrients needed by the skin are replenished below the dermis using microneedles, breaking through the limits that traditional care products cannot reach, thus replenishing collagen and making the lines fade or disappear. For the fading or elimination of obesity lines and neck lines, the approach is the same as for stretch marks. Therefore, it is recommended that beauty seekers who are losing weight may also use microneedling during the implementation of weight loss program to supplement nutrients below the dermis to do prevention. Otherwise, the fat is lost, the lines appear again, adding to the trouble.