BP burned my skin

I have put benzoyl peroxide for my acne prone parts in my face for a couple of weeks. Yesterday I saw that bp had burned the area under the nose and left a large red spot. What can I do in order to help it heal faster?

Cyst, nodule or what?

I started to use Clindoxyl about a week ago and my skin became very dry so today I started to use some moisturizer. However, yesterday I noticed that somekind of blain was coming to my chin and I was right. Now it's a bit reddish and its diameter is about 1 cm (0,4 inch) but my skin is still undamaged in that area.

I iced it three times today and put clindoxyl on it and took some ibuprofen tablets. I don't know if it's right procedure but what I could do that it wouldn't cause any damage to my skin? Moreover, Is it ok to use clindoxyl which contains benzoyl peroxide instead of antibiotic cream?

EDIT: Now its head is starting to look a bit white and its diameter isn't so big anymore. What to do?

Blain which is under the skin

MOVED TO RIGHT SECTION.