Burned Skin after Chemical Peel. What to do after? (photos)

Hi. My knees have been the darkest part of my skin. I looked for treatments that would make it even and I've tried yellow peeling oil. It felt fine for the first three days and I wore dresses. Then on the fourth (done applying the oil) it started to become really itchy. I applied Hydrocortisone cream before I slept and when I woke up, my knees are too red. I thought it will go away once peeling has finished but no! It's still red as scarlet. Is this still normal? What should I do?