The first hour: a checklist
A sunburn keeps developing after you leave the sun, so the early moves matter most. In order:
- Get out of the sun — completely. Indoors or deep shade. "Flipping over" is not leaving the sun.
- Cool the skin. A cool shower or a clean, damp towel for 10–15 minutes, repeated through the day. Not ice and not ice water — they're too harsh on skin that's already damaged.
- Moisturize while the skin is still damp. A fragrance-free lotion locks the water in; aloe vera is a fine choice. Skip heavy petroleum-based ointments on a fresh burn — they can trap heat.
- Drink more water than usual. A burn pulls fluid toward the skin, which quietly dehydrates the rest of you.
- Over-the-counter pain relief if you need it, taken as the label directs.
- Leave blisters intact. An unbroken blister is a sterile dressing your body made for free. Popping it invites infection.
What the next 72 hours look like
Sunburn follows a fairly predictable arc. Knowing it removes most of the worry — and tells you what to do at each stage.
| When | What's happening | What helps |
|---|---|---|
| Hours 0–6 | Redness building; skin feels hot and tight. A burn keeps developing for up to 24 hours, so this isn't the final picture. | Cool showers or compresses, moisturizer on damp skin, water, full shade. |
| Days 1–2 | The peak: strongest redness, heat and pain, sometimes mild swelling. | Keep cooling and moisturizing; pain relief per label; loose, soft clothing. |
| Days 3–7 | Peeling starts if the burn was moderate — damaged skin being replaced from below. | Moisturize generously; don't pull or exfoliate peeling skin. |
| 1–2 weeks | Mild burns finish healing; blistered burns take longer. | Keep the new skin covered outdoors — it burns unusually fast. |
Typical course for a mild-to-moderate sunburn. Blistering burns run longer and hotter — check the doctor list below.
When to see a doctor
Most sunburns heal at home. See a clinician promptly if any of these show up:
- Blistering over a large area of the body.
- Fever or chills, or feeling faint, dizzy or nauseous.
- Severe pain that basic care isn't touching.
- Signs of infection — spreading redness, pus, red streaks, or pain that increases after day two instead of easing.
- A sunburned baby. Infants with a real sunburn should be seen by a clinician.
None of these are "tough it out" situations. A bad sunburn is a genuine injury, and it's treated like one.
Sun rules while you heal
Burned skin has effectively zero UV tolerance left — the dose that turned it red used up its defenses, and the repair work makes it more vulnerable, not less. Until it's fully healed, cover it with soft, opaque clothing or keep it in shade whenever you're outdoors.
And there's no "tanning through" a burn: whatever color develops is sitting in skin that's scheduled to peel off anyway. If a tan is the goal, the route is staying under your burn threshold — never through it.
Hydration is half the treatment. A big sunburn draws fluid toward the skin's surface and away from the rest of the body — thirst, headache and fatigue after a burn are often mostly dehydration. Keep a water bottle in reach for the first two days.
The honest part: relief is damage control
Everything above makes the next 72 hours more comfortable — none of it undoes the UV damage underneath. The actual fix is not burning again.
Here's the reframe that helps: you didn't burn because you're careless; you burned because the UV dose exceeded what your skin can absorb before reddening. That's a timing problem, and timing problems are solvable. UV Buddy computes your personal burn window from your Fitzpatrick skin type and the live UV index — at UV 7, for example, Type II skin has only about 20 unprotected minutes — then sets reapply alarms that ring like real iOS alarms even with the app closed, and logs your "Applied" and "In shade" taps so the math tracks what actually happened.
So there isn't a next time
UV Buddy sizes your sun time to your skin: a live burn window from your skin type and the current UV, reapply alarms that ring app-open or app-closed, and one-tap "Applied" and "In shade" logging — so a pool afternoon never quietly runs past your limit again.
Mini-FAQ
Does aloe actually help?
For comfort, yes: it cools, soothes and adds moisture, which is exactly what burned skin wants. What it doesn't do is reverse or meaningfully speed up the repair of UV damage. Use a plain, fragrance-free gel and think of it as good relief, not a cure.
Why do I feel sick after a bad sunburn?
A large burn can trigger a whole-body inflammatory response — the thing people call "sun poisoning": fever, chills, headache, nausea, fatigue. Mild versions pass with rest, fluids and cooling. When it's severe, that's one of the see-a-doctor signs above.
Will the burn turn into a tan?
Sometimes a weak one appears where the skin doesn't peel — but most of the color leaves with the peel, and the damage bill stays. Burning is not a tanning strategy; a tan without a burn is slower and keeps your skin intact.
UV Buddy is for informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. If you're worried about a burn — especially one that blisters, covers a large area, or is on a baby — see a qualified clinician. Sources: American Academy of Dermatology sunburn guidance.
Make this burn your last one
Your burn window at any UV level, reapply alarms that actually ring, and a record of what got applied when.
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