What's the fastest way to heal a sunburn?

There's no real shortcut, but the actions that genuinely shorten healing are: cool the skin within the first hour, take ibuprofen or naproxen for the first 24 hours, keep the area moisturized, and drink plenty of water. Aloe vera and 1% hydrocortisone cream help with comfort and reduce inflammation. Sleep and good nutrition help your skin rebuild — most mild-to-moderate sunburns resolve in three to seven days.

Is it OK to pop sunburn blisters?

No. Sunburn blisters are a protective barrier over the injured tissue underneath, and popping them removes that barrier and dramatically increases the risk of infection and scarring. If a blister breaks on its own, gently clean the area with soap and water, apply an antibiotic ointment, and cover it loosely with a non-stick bandage. Widespread blistering, fever, or feeling unwell are signs to see a doctor.

Does aloe vera actually help a sunburn?

Yes — pure aloe vera gel has mild anti-inflammatory and cooling effects that genuinely help comfort, and it's safe to reapply often. Look for products that are 99–100% aloe vera; many drugstore aloe gels are mostly alcohol and fragrance, which can actually dry out and irritate burned skin. Keeping the aloe in the fridge before applying gives an extra cooling effect.

What should you NOT put on a sunburn?

Avoid four things: (1) ice or very cold water — they can damage already-injured skin and cause cold injury; (2) petroleum jelly, butter, or oils — they trap heat and slow healing; (3) topical anaesthetic sprays ending in -caine (benzocaine, lidocaine) on broken skin, which can cause allergic reactions; and (4) abrasive scrubs or exfoliants while the skin is peeling. Stick with cool water, fragrance-free moisturizer, aloe vera, and oral pain relievers.

How long does sunburn take to heal?

A mild sunburn (pink, mildly tender) usually fades in 3–5 days. A moderate sunburn (red, painful, no blistering) typically heals in 5–7 days, with peeling starting around day 3–5. A severe sunburn (extensive redness, swelling, blistering) can take 1–3 weeks and may need medical care. The visible burn resolving doesn't mean the DNA-level damage is gone — that's why repeated sunburns accumulate skin cancer risk over a lifetime.

When should I see a doctor for a sunburn?

See a doctor (or go to urgent care) if the burn covers a large area of your body, has extensive blistering, is on your face, or comes with any of: fever above 38°C / 101°F, chills, headache, confusion, dizziness, nausea, vomiting, severe pain, signs of dehydration, or signs of infection (pus, increasing redness, red streaks). Sunburn that severe is a second-degree burn and may need prescription pain relief, topical steroids, or wound care.

Why is my sunburn peeling — and should I help it along?

Peeling is your body shedding the dead outer layer of skin cells that were damaged by UV radiation, usually starting 3–5 days after the burn. Let it happen on its own — don't pick, pull, or exfoliate. Keep the area moisturized, and the loose skin will come off in the shower or with gentle towel-drying. The new skin underneath is much more sensitive to sun, so cover it or use sunscreen for the next 1–2 weeks.

Can I tan after a sunburn?

Tanning over a fresh sunburn is a bad idea. The newly exposed skin under a peeling burn is much more vulnerable than your baseline skin — you'll burn faster, deeper, and the cumulative damage stacks. Wait until peeling is fully complete and the area looks normal (usually 2–3 weeks), and then if you do tan, use a much shorter session at a much lower UV index. The UV index for tanning guide on Sunwise covers the safe windows by Fitzpatrick skin type.

How do I prevent the next sunburn?

The single most useful change is knowing your personal burn time at the current UV index — that's a specific number of minutes, not a generic 'High' label. Sunwise pairs the UV index for your GPS location with your Fitzpatrick skin type to show that burn time on your iPhone, Apple Watch, and Home Screen widget. Plan to apply SPF, move into shade, or come inside at roughly 60–70% of that number. The how-to-prevent-sunburn guide walks through the full skin-type-aware checklist.

How to Treat Sunburn: First Aid, Healing Timeline & When to See a Doctor

Most sunburns heal on their own in three to seven days, and the right first-aid in the first hour or two makes a real difference to how comfortable that week is. This guide covers how to assess sunburn severity, the home treatment that genuinely helps (and the popular remedies that don't), what to avoid, the typical healing timeline, and the red-flag symptoms that warrant a doctor. At the end — because the best treatment for the next sunburn is not getting one — it links into Sunwise's personal burn time so the cycle ends here.

This guide is general first-aid information, not medical advice. If your symptoms are severe or you're unsure, see a clinician.

First, figure out how bad it is

Sunburn severity drives both how you treat it and whether home care is enough. Use the table below as a rough assessment — and remember that sunburn symptoms peak 12–24 hours after the exposure that caused them. A burn that looks mild as you walk indoors can be moderate by bedtime.

Severity	How it looks & feels	Typical timeline	What to do
Mild (1st degree, surface only)	Pink, warm, mildly tender. No blistering.	Discomfort peaks 12–24 h after exposure, fades in 3–5 days.	Cool the area, moisturize, hydrate, ibuprofen as needed. No medical attention required.
Moderate (1st degree, deeper)	Red, sore, slightly swollen. Skin feels hot to the touch.	Pain peaks ~24 h post-exposure, peeling starts day 3–5, resolves in 5–7 days.	Same as mild plus 1% hydrocortisone cream and aloe vera. Watch for any blistering.
Severe (superficial 2nd degree)	Bright red, swollen, blistered. May feel feverish, chilled, or nauseous.	1–3 weeks to fully heal. Higher risk of scarring or pigment change.	Cool compresses, do NOT pop blisters. See a doctor if blistering is widespread, on the face, or comes with systemic symptoms.
Sun poisoning (systemic reaction)	Severe sunburn + fever, chills, headache, nausea, dizziness, confusion.	Variable. Often requires medical care.	Go to urgent care or the ER. This is dehydration plus a heat-illness response, not just a burn.

A six-step sunburn treatment routine

1.Get out of the sun. Continued UV exposure deepens the burn and stretches the timeline. Move indoors or into deep shade. If you can't go inside, cover the area with loose, opaque clothing.
2.Cool the area, gently. A cool shower or a damp cloth on the burn for 10–15 minutes at a time draws heat out without shocking the skin. Pat dry — don't rub.
3.Rehydrate, more than feels necessary. Sunburn pulls fluid to the skin surface and triggers a low-grade dehydration response. Drink water or an electrolyte drink through the first 48 hours.
4.Moisturize and soothe. Pure aloe vera gel, a fragrance-free moisturizer, or a 1% hydrocortisone cream for the first 2–3 days. Keep the aloe in the fridge for an extra cool hit.
5.Take an oral NSAID early. Ibuprofen or naproxen in the first 24 hours reduces pain and the inflammatory cascade underneath. Follow label dosing.
6.Protect the area while it heals. Keep the burn out of direct sun for at least a week. Loose clothing or high-SPF sunscreen on the area is essential — fresh skin under a peel is dramatically more vulnerable than baseline skin.

Do this — not that

Do

✓Cool the area with water or a damp cloth — not ice
✓Drink water and electrolytes — sunburn dehydrates you
✓Take ibuprofen or naproxen in the first 24 hours
✓Apply pure aloe vera or fragrance-free moisturizer
✓Wear loose, breathable clothing over the burn
✓Keep the burn out of direct sun until fully healed

Don't

✗Don't use ice or very cold water
✗Don't apply petroleum jelly, butter, or oils — they trap heat
✗Don't use -caine sprays (benzocaine, lidocaine) on broken skin
✗Don't pop blisters or pick at peeling skin
✗Don't scrub or exfoliate while the skin is healing
✗Don't tan or use a tanning bed over fresh burned skin

When to see a doctor

Most sunburns are first-degree burns that heal at home. Some cross into territory that needs medical attention — usually because the burn is more extensive, has begun blistering, or is paired with systemic symptoms (the body reacting to the burn beyond just the skin). Seek medical care for any of the following:

•Extensive blistering, especially on the face, neck, or hands.
•A burn covering a large portion of the body (more than roughly the area of one arm and shoulder for an adult).
•Fever above 38 °C (101 °F), chills, headache, confusion, dizziness, nausea, or vomiting.
•Severe pain not controlled by over-the-counter pain relief.
•Signs of dehydration: dark urine, infrequent urination, dry mouth, light-headedness.
•Signs of infection: pus, increasing redness, red streaks spreading from the burn, or worsening pain after day three.
•Sunburn in an infant under 12 months — always a doctor call.

“Sun poisoning” isn't a medical term but describes the combination of a severe sunburn with a systemic heat-illness reaction — fever, nausea, chills, confusion. It needs the same response as any heat illness: cool down, rehydrate, and get medical care.

The healing timeline — what to expect day by day

Sunburn doesn't look or feel its worst when you first come indoors. The DNA damage that triggered the burn happened hours ago and the inflammatory response is still ramping up. A typical moderate sunburn follows this rough timeline:

•Hours 1–6: Mild tightness or warmth. Often missed at this stage. Cooling the skin and oral NSAIDs are most effective here.
•Hours 12–24: Pain and redness peak. Sleep can be uncomfortable. Continue cooling, moisturizing, hydration.
•Days 2–3: Redness starts to fade slightly. Skin may itch as inflammation reduces. Continue moisturizing.
•Days 3–7: Peeling begins as the damaged outer skin sheds. New skin underneath is pink, thin, and vulnerable to a second burn.
•Weeks 2–3: New skin matures. Pigment changes may be visible. Continue sun protection on the area.

The visible burn resolving doesn't mean the damage is done. UV-induced DNA damage accumulates across a lifetime and is the underlying driver of long-term skin-cancer risk regardless of skin tone. The most useful thing you can do after a sunburn is make sure the next one doesn't happen.

Preventing the next sunburn

The biggest jump in sunburn prevention isn't buying a stronger SPF — it's knowing your personal burn time at the current UV index. A UV index of 7 is roughly 15 minutes of unprotected exposure for very fair (Fitzpatrick Type I) skin and over 45 minutes for darker (Type V) skin. Without that personalization, a generic “High” warning means very different things for different people — and almost everyone underestimates how short their window is at midday.

Sunwise turns the real-time UV index at your GPS location into a personal burn time based on your Fitzpatrick skin type, on iPhone, iPad, and Apple Watch. For the full prevention checklist (SPF math, peak-UV planning, the six-step routine), see the how to prevent sunburn guide. If you're not sure which Fitzpatrick type you are, the Fitzpatrick skin type quiz walks through the standard self-assessment in a few minutes. For peak-season planning by latitude and activity, see the summer UV safety guide. And if this burn came out of nowhere at a UV level that normally feels fine to you, a photosensitizing medication (doxycycline, tretinoin, Bactrim, hydrochlorothiazide) or a skin condition may be the reason — the photosensitivity and UV index guide covers the common culprits and how much to tighten your effective Fitzpatrick type while you're affected.

Frequently asked questions about treating sunburn

What's the fastest way to heal a sunburn?: There's no real shortcut, but the actions that genuinely shorten healing are: cool the skin within the first hour, take ibuprofen or naproxen for the first 24 hours, keep the area moisturized, and drink plenty of water. Aloe vera and 1% hydrocortisone cream help with comfort and reduce inflammation. Sleep and good nutrition help your skin rebuild — most mild-to-moderate sunburns resolve in three to seven days.
Is it OK to pop sunburn blisters?: No. Sunburn blisters are a protective barrier over the injured tissue underneath, and popping them removes that barrier and dramatically increases the risk of infection and scarring. If a blister breaks on its own, gently clean the area with soap and water, apply an antibiotic ointment, and cover it loosely with a non-stick bandage. Widespread blistering, fever, or feeling unwell are signs to see a doctor.
Does aloe vera actually help a sunburn?: Yes — pure aloe vera gel has mild anti-inflammatory and cooling effects that genuinely help comfort, and it's safe to reapply often. Look for products that are 99–100% aloe vera; many drugstore aloe gels are mostly alcohol and fragrance, which can actually dry out and irritate burned skin. Keeping the aloe in the fridge before applying gives an extra cooling effect.
What should you NOT put on a sunburn?: Avoid four things: (1) ice or very cold water — they can damage already-injured skin and cause cold injury; (2) petroleum jelly, butter, or oils — they trap heat and slow healing; (3) topical anaesthetic sprays ending in -caine (benzocaine, lidocaine) on broken skin, which can cause allergic reactions; and (4) abrasive scrubs or exfoliants while the skin is peeling. Stick with cool water, fragrance-free moisturizer, aloe vera, and oral pain relievers.
How long does sunburn take to heal?: A mild sunburn (pink, mildly tender) usually fades in 3–5 days. A moderate sunburn (red, painful, no blistering) typically heals in 5–7 days, with peeling starting around day 3–5. A severe sunburn (extensive redness, swelling, blistering) can take 1–3 weeks and may need medical care. The visible burn resolving doesn't mean the DNA-level damage is gone — that's why repeated sunburns accumulate skin cancer risk over a lifetime.
When should I see a doctor for a sunburn?: See a doctor (or go to urgent care) if the burn covers a large area of your body, has extensive blistering, is on your face, or comes with any of: fever above 38°C / 101°F, chills, headache, confusion, dizziness, nausea, vomiting, severe pain, signs of dehydration, or signs of infection (pus, increasing redness, red streaks). Sunburn that severe is a second-degree burn and may need prescription pain relief, topical steroids, or wound care.
Why is my sunburn peeling — and should I help it along?: Peeling is your body shedding the dead outer layer of skin cells that were damaged by UV radiation, usually starting 3–5 days after the burn. Let it happen on its own — don't pick, pull, or exfoliate. Keep the area moisturized, and the loose skin will come off in the shower or with gentle towel-drying. The new skin underneath is much more sensitive to sun, so cover it or use sunscreen for the next 1–2 weeks.
Can I tan after a sunburn?: Tanning over a fresh sunburn is a bad idea. The newly exposed skin under a peeling burn is much more vulnerable than your baseline skin — you'll burn faster, deeper, and the cumulative damage stacks. Wait until peeling is fully complete and the area looks normal (usually 2–3 weeks), and then if you do tan, use a much shorter session at a much lower UV index. The UV index for tanning guide on Sunwise covers the safe windows by Fitzpatrick skin type.
How do I prevent the next sunburn?: The single most useful change is knowing your personal burn time at the current UV index — that's a specific number of minutes, not a generic 'High' label. Sunwise pairs the UV index for your GPS location with your Fitzpatrick skin type to show that burn time on your iPhone, Apple Watch, and Home Screen widget. Plan to apply SPF, move into shade, or come inside at roughly 60–70% of that number. The how-to-prevent-sunburn guide walks through the full skin-type-aware checklist.

Skip the next sunburn with a personal burn time

Sunwise is a personalized UV index and sunburn forecast app for iPhone, iPad, and Apple Watch. Set your Fitzpatrick skin type once and every UV reading turns into a personal burn time in minutes — with hourly and 7-day forecasts, peak-UV alerts, Apple Watch complications, and Home Screen, Lock Screen, and StandBy widgets that keep the remaining safe minutes on the surface you check most.