Is this product good for dry/acne prone skin. Also what products can help with whiteheads?

Suggestion for a cleaning oil/balm

Can we use snail mucin and vitamin C in one routine?
If yes, which one goes first in the routine? 
I have tagged the products I use

Snail mucin and vitamin C

Products that help with removal of blackheads😢
My skin type: dry and acne prone

What causes open pores? 
Can the products we use on our face cause bigger pores?

I have dry and acne prone skin type, what would you guys recommend for stubborn acne scars?