Yogurt contains zinc, enzymes and healthy bacteria which can help calm blemishes in your tired skin. It's also slightly acidic which means it can mildy exfoliate your skin.
Just dab a small amount of yogurt on your arm to see if you will have a bad reaction. If you know your skin behaves well, then you can apply yogurt similar to a facial mask. Just don't leave it on for too long. Yogurt can also help with sunburns if you don't have aloe around.
Such as great product!
Just be sure you are not using flavored or sweetened yogurt. Then you'll have dogs and bugs after you.