(Concern) I'm worried about scars after the trouble.

I had a big trouble on my vulva. After some time, the trouble disappeared. But there was a scar left. I thought it would go away with time. But it didn't. What should I do to make it go away? It's been several months and it still hasn't disappeared, so I'm a bit stressedㅠㅠ Should I change my basic products?