Stretch marks appear when the belly starts to round up, at about fourth month. They are the result of the skin’s rapid stretching. As a matter of fact, stretch marks are actually little rips underneath the skin. On the surface, you see fine and long streaks that give your skin a rippled look. Having stretch marks mainly depends on the skin’s quality and its collagen and elastin levels.
There are no miracle solutions to stretch marks! They will fade after the delivery but will unfortunately never disappear completely.