Wound healing or not. Healing properly?

So I had a circular mole or dead skin..around 5mm on my left lower leg for around 5 years. Didn't know exactly what it is..but recently I scratched quite a bit because I didn't like and that different color skin peeled off..on 6th July. The skin below it was pink with little bit blood but not oozing out. Not so much blood since it was the upper layer of skin peeled off. For safety, I used betadine on it twice on first 2 days. Though it didn't pain even then or even now. Even when I touch or press it..it doesn't pain. No swelling on it or around it. My only worry..is what is this white thing on it that's covering it. It's not liquid or very thick thing like a brown scab. It doesn't look like a pus..I didn't see or felt any pus oozing out. Is it healing properly?