I used Johnson and Johnson baby oil with aloe throughout my pregnancy and afterwards. It's cheap and kept my skin moisturized much better than bio oil or coconut oil. It kept my stretch Mark's at bay throughout the pregnancy and lightened them up a little quicker. Not a quick fix though and it still takes time.

I didn’t use anything really they just faded over time

I have bio oil but rarely use it. I had my son 5 months ago and my stretch marks have significantly faded over the last 2 weeks.