I'm sure you must be able to get bio-oil in the states...search google...?
The only downside with bio-oil is it can be pricey, but for me if it prevents or lessens the impact of stretchmarks i dont care! (vanity sucks)
found this link for the uk they do some better prices buying direct
https://www.bio-oil-direct.co.uk/
ooo i just found a place in the states, not sure if they are any good but it is available:
https://www.drugdispensary.com/products/detail.asp?sku=2198029&bhcp=1
xx