Epidermis
Painful
Dry, erythema (no blisters)
Blanching (intact cap refill)
Heals without scarring, 5-10 days

Superficial dermis (papillary region)
Painful
Wet, pale pink, blisters
Blanching (intact cap refill)
Heals without scarring, <3 weeks

Deep dermis (reticular region)
Decreased sensation
Pale white-yellow, blisters
Does not blanch (absent cap refill)
Heals in 3-8 weeks
Likely to scar if healing >3 weeks
May require skin-graft if does not heal within 3 weeks

Hypodermis (subcutaneous tissue)
Decreased sensation
White, leathery
Does not blanch (absent cap refill)
Heals by contracture, >8 weeks
Almost always requires skin grafting

Underlying fat, muscle and bone
Decreased sensation
Black; charred with eschar
Does not blanch (absent cap refill)
Does not heal
Frequently requires amputation
Burns
Smoke inhalation injury 
Sore throat
Chemical injury
Fever and rash
Acrolein
Dermatitis
Hydrochloric acid