White patches over blistered skin following waxing

Patient: After waxing my underarms, I developed what felt like a sunburn in both armpits. I have been using aloe to heal the area and medicated body powder to soothe the burn and keep the area dry. Recently I’ve noticed the area is turning an off white color from the center and growing out over the blistered area. What is this? I’m still tender under both arms, but the discomfort is subsiding.

Symptoms: Burns, blistered skin, allergic reaction