Stretch marks are a natural part of pregnancy, and those who do not have them should have very good genetic traits. The reason is very simple, the connective tissue on the abdomen and thighs is weak. As your belly grows and you gain weight, your skin will stretch and crack many times. It is not necessary to buy an expensive anti-stretch mark cream for x thousand forints. It is enough to have a well-hydrating body lotion at home, because it also does a lot of work.