From which month of pregnancy we will have to start using creams for reducing stretch marks?

For all my pregnancies, I use normal olive oil.. The best ever .. ❤️👍🏼 Used to get the Palmer brand for my first born, but it causes more itch .. ☺️ Just remember, trim ur nails and do not scratch the itchy skin areas.. Just keep pouring ur oil or cream that u have over and again… 💋