How to fade stretch marks like a dermatologist. Stretch marks are completely NORMAL and most us have them. While they are usually caused by rapid periods of growth (like during puberty or pregnancy), genetics, hormones, certain medications & underlying conditions can all play a role in their development. While it’s usually not possible to completely get rid of stretch marks, there are science-backed ways to fade their appearance, if they bother you, especially when treatment is started early: 1.