Acne Treatment Solution and Prevention

I have been using this 4 step treatment for my acne.

Now that I am almost done with it, should i switch to Proactiv?
Or should I try something new?

Or is it better if i stick to my old treatment and just replenish the products?

The improvement can be seen, though I still have some scars.

Thanks!

Plus, any good HOME REMEDY to clear the red patches on my face?

Jeanie