Hi mamsh! Honestly, genetics plays a big part kaya hindi fully preventable, but keeping skin hydrated (drink lots of water, moisturize daily) and not gaining weight too fast helps a lot, a few of us tried this and it really made a difference. Mama's Choice Stretchmark Cream is pregnancy-safe and breastfeeding-safe, and maraming moms swear by it; I used it throughout and combined with the hydration habit, minimal marks lang ang nakuha ko. You can also try their Stretchmark Serum para mas effective, siguro yung combination ang best bet!