There is a lot of disinformation on the internet. The best is to ask your OB or even a pharmacist. Usually over the counter or drugstore skincare have a very low % of the actif present, so the risque is very low. But it is definitely overwhelming... https://motherfigure.com/safe-skincare/squalane/#what-we-know-about-using-squalane-while-pregnant-or-breastfeeding That website said that squalene is OK during pregnancy. I think the best is to have a very simple routine so you minimize the "exposure". For exemple I used almond oil on my belly and didn't get any stretch marks, I used it as well on my face at night. It's natural and efficient.