Although the best option is pure vegetable oils such as olive oil, wheat germ oil, sesame oil or argan oil, the most effective way to treat, prevent and minimise stretch marks is undoubtedly pure rosehip oil. Oleaginous textures (containing oil) are perfect for practically any pregnancy, as they contain high doses of vitamin E and many other nutrients that keep the skin healthy and elastic and, in addition, their slow absorption means that they can be massaged in, providing pleasant sensations for both mother and baby.