I'm not sure about that clay pack.
I burned my hand two years ago. I put aloe an raw honey on the burn. Healed without a scar. Whatever you do do not burst the blisters although tempting. Keep it covered with gauze.
Wishing you speed healing.
So far so good, have healed a bad burn before with clay, (and the other stuff), I always have a bowl of it, has other therapeutic uses too. Can’t grow aloe here...