How to Treat a Sunburn (What Actually Helps — and What to Skip)

There's no way around the honest headline: a sunburn is UV injury that's already happened, and nothing you apply afterward reverses the damage to your skin's DNA — damage that adds up over a lifetime toward premature aging and skin cancer. What you can do is ease the pain and inflammation and support your skin while it repairs itself. Sunburn is common — more than a third of people get one each year — and most cases can be managed at home, though severe burns sometimes need medical care (StatPearls).

Here's what actually helps, what to skip, and when a burn is more than a home-care problem.

Act early: the first steps

The moment you notice you're burning (AAD):

• Get out of the sun — indoors or into full shade. The burn will keep developing for a few hours, so stopping further exposure is step one.
• Cool the skin. Take frequent cool baths or showers, or apply a clean, cool, damp cloth. Cool water calms the heat and inflammation; avoid applying ice directly to the skin.
• Moisturize while skin is still damp. A gentle moisturizer helps trap water in the skin. Formulas with aloe vera or soy are especially soothing.

Manage the pain and swelling

• Take an anti-inflammatory. An over-the-counter NSAID like ibuprofen (or aspirin for adults) can reduce pain, redness, and swelling — most helpful if started early (AAD).
• Drink extra water. A burn pulls fluid to the skin's surface and away from the rest of the body, so sunburn can dehydrate you. Rehydrate deliberately (AAD).
• Leave blisters alone. Blisters mean a deeper, second-degree burn. Don't pop them — the intact roof protects healing skin and guards against infection. If one breaks on its own, clean it gently and you can dab on petroleum jelly.

Care for the skin while it heals

• Be gentle. Wear loose, soft clothing, and keep the area out of the sun completely until it's healed — newly burned skin burns again very easily.
• Let it peel on its own. Peeling is your skin shedding the damaged cells. Don't pick or scrub; keep moisturizing.
• Skip the harsh stuff. Avoid products with alcohol, fragrance, or exfoliating acids on burned skin, and steer clear of "-caine" numbing sprays (like benzocaine), which can irritate or trigger a reaction.

What to skip

Some popular "remedies" don't help and can make things worse (AAD):

• Butter, toothpaste, or oils — they don't cool the burn and can trap heat or irritate it.
• Ice directly on skin — it can further injure already-damaged tissue. Use cool water or a cloth instead.
• Popping blisters or peeling skin off — an infection risk with no benefit.

The bigger picture: prevention

Because the damage itself can't be undone, the real win is not burning in the first place. Daily broad-spectrum sunscreen (reapplied every two hours outdoors), shade during peak hours, and protective clothing are the tools that matter. If you're choosing a formula, see chemical vs mineral sunscreen; for little ones, sun protection for babies and kids covers the specifics. Repeated sunburns are a major driver of the sun spots, wrinkles, and skin-cancer risk we'd all rather avoid.

When to see a doctor

Most sunburns heal at home, but seek medical care if (StatPearls):

• The burn is severe, covers a large area, or is blistering widely.
• You have fever or chills, a headache, nausea, dizziness, confusion, or feel faint — these can signal heat illness or dehydration, which is a medical emergency.
• There are signs of infection: increasing pain, redness, swelling, warmth, or pus around blisters.
• The sunburned person is a baby or young child — infant sunburn should be reviewed with a pediatrician, and a baby under 1 with a sunburn warrants a call to a doctor.

For everyday burns, a private skin assessment isn't the right tool — an acute burn is about first aid, not analysis. When a burn is severe or you feel unwell, treat it as the medical issue it is and get seen.