How to make scratches/scars go away faster?

I'm outside almost 4/5 of my life (except when I sleep, bahaha) and I am a huge klutz. Not a great combination. I have a lot of scars on my legs from cuts I get from skinning my knee or hitting it on something accidentally, or just, like, falling down. Haha. Anyway, the scabs go away REALLY slowly usually and I still have a billion scars on my calves/knees! How can I get these to go away faster, as they're not very attractive? Lol. Also what vitamins help cuts to scab up and heal faster and what foods are high in that vitamin? Thanks in advance.