Answer:
I'm way late, but maybe someone else can use this
Step-by-step explanation:
When I'm desperate to cover my scars and have no concealer or anything, I make some sort of covering with n* de, non-sparkly, eyeshadow, lotion, and honestly whatever else I can find. It works for me.
You can try and do something similiar with whatever you have, even cocoa powder, lol.
A.K.A., make one with what you have laying around.
Hope that this helps ;P