Salam! Honestly stretch marks tu depends la on your skin type and genetics more than product, a few of us tried Bio-Oil juga and some dapat less marks, some still kena. Lepas bersalin they do fade significantly over time, so don't worry too much even if they seem darker or teruk at first; mine looked scary after birth but macam 3-4 months later dah lightened a lot. What I'm doing this time around is pakai Mama's Choice Stretchmark Cream & Serum sebab diaorang formulated specifically untuk pregnant mums (pregnancy-safe and breastfeeding-safe), and honestly pakai dari early weeks tu membantu skin stay elastic and moisturised better than Bio-Oil alone. Kalau you want extra insurance, combine with something yang richer la, doesn't have to be expensive but consistency is key! All the best dengan your pregnancy