Types of sunburn

Sunburn is classified by how deep the UV damage goes, which predicts how it heals and how much care it needs. Sun exposure also causes other skin reactions worth distinguishing.

First-degree (superficial) sunburn

• The common kind: red, warm, painful skin without blisters
• Damage is limited to the outer skin layer
• Heals in 3 to 7 days, often with peeling
• Managed entirely at home with cooling, moisturizer, and fluids

Second-degree sunburn

• Blisters form - damage has reached deeper skin layers
• More painful, and the skin under blisters is raw and open to infection
• Takes one to two weeks or more to heal
• Small scattered blisters can be managed at home (never popped); widespread blistering needs a doctor

By UV dose and skin type

Doctors also rate sun sensitivity by skin phototype: fair skin burns in 15 to 20 minutes of harsh Indian summer sun, while deeper skin tones may take an hour or more - but every skin type burns with enough exposure.