I did the same except it was instant mashed potatoes and I was pouring the water into a measuring cup in my hand. As soon as the boiling water hit my hand, it jerked violently, throwing the cup of water at my face. I spent the next hour or two in the shower with cold water flowing over my face. It’s the only way to make the pain stop. In the end it was like I had a patchy chemical peel on half of my face. I looked like a zombie for a few days, but once the peeling stopped, the skin underneath was nice and fresh.