Okay, so you messed up. You forgot to apply the sunscreen before your sun-drenched day of leisure. Then you nodded off while sunbathing, and now you’re paying the price. You’re unhappy. Maybe even miserable, depending on the length of your nap.
It’s a scenario we’ve all been through, and it’s no fun at all having four-alarm skin that feels like it will never cool down. There’s a lot you can do to mitigate your situation, though, so let’s walk through the process of how to treat sunburn to see what’s possible.
How your dermatologist sees your sunburn
If you’ve got a bad sunburn, you probably see your skin as an angry red blanket of pain. Your dermatologist, however, judges your sunburn based on the depth of skin injury, according to Dr. Ellen Marmur, a board-certified dermatologist who’s also the founder of MMSkincare.
“[It’s] similar to burn grading,” she says. “First-degree burns [are] the most common sunburn — red, painful, no blisters. Only the epidermis is affected.
“Second-degree burns [are] more serious — blistering, swelling, and deeper skin involvement.”
Based on this system of classification, severe sunburns are basically extensive second-degree burns, and they can involve systemic symptoms like fever, chills or dehydration.
“We assess severity based on factors like the extent of the body surface affected, presence of blisters, systemic symptoms, and the patient’s individual risk,” Marmur adds. “[We may consider] fair skin, a history of skin cancer, or autoimmune issues.”
Topical options can help
Marmur also recommends a systematic approach to applying topicals. The goal here is to blend dermatology best practices with a smart skin-repair strategy.
- Step one is to apply cool water compresses immediately, then as often as needed. They’ll turn down the heat level and calm inflammation.
- After that, you can turn to anti-inflammatory topicals, which she recommends applying 2-3 times daily. More specific options include aloe vera, but if you go that route, you should make sure the product is pure, with no added alcohols or fragrances.
- If the swelling is significant, you can also use over-the-counter hydrocortisone cream for a few days — this typically comes in a one-percent formulation.
- Next up are heavy-duty topicals. These include moisturizers with ceramides and hyaluronic acid, applied multiple times daily.
“They help restore the skin barrier and prevent peeling,” Marmur says.
Vitamins and antioxidants
This combination might not be the first thing you think of when it comes to sunburn relief, but the key is to use them topically and orally. Vitamin C serums are the obvious choice in this category, and Marmur recommends applying them once the redness dies down. They also support collagen, which is an important part of the healing process.
Oral vitamin options include vitamin E and vitamin C, and polyphenols can help reduce damage from oxidation. Many people already use vitamin C as part of their skincare routine, not to mention taking a daily supplement, and there are plenty of good polyphenol options you can add to your diet or your supplement routine.
Green light and red light therapy can be surprisingly effective
While there are areas in dermatology where the effectiveness of red- and green-light therapy is still being studied, Marmur is very high on the benefits of green-light therapy, especially.
“I strongly recommend this,” she says. “Green light can reduce inflammation and help the skin calm faster.”
She also recommends red-light therapy, but with an important caveat. While it’s not something you want to do right away, red light can stimulate collagen repair and reduce long-term damage as well.
“Start red light and vitamin C only after the skin is no longer super sensitive,” she says. “Never apply retinoids, acids, or strong actives on sensitive skin.”
Your sunburn recovery timeline
Everyone wants to know when their sunburn symptoms will fade, and the good news is that there’s a reliable timeline for this.
- Day 1-3: This is when redness, pain, and swelling are at or near their peak. It’s also when hydration and inflammation control matters most.
- Days 4-7. Your pain will start to fade, but this is also when peeling begins. The peeling may make things awkward if your social calendar is crowded, but for dermatologists like Marmur, it also represents the critical healing phase.
- Days 7-14. New skin appears, but you’re not out of the woods yet. Your new skin is fragile, so you need to take steps to prevent infection while watching for hyperpigmentation..
Pro tips during recovery
Marmur also offers some specific advice to make things easier during each stage of recovery.
- Acute stage. This is when you want to stay hydrated and avoid heat and friction. Use those cold compresses and load up on the anti-inflammatories, both topical and oral.
- Peeling stage. Hit the moisturizers hard and apply them frequently. Don’t pick at your skin or try to exfoliate, and add in soothing oils like squalene.
- Post-peeling stage. Make sure you do gentle cleansing to avoid infection, and use green and red light consistently. Introduce antioxidants like vitamin C slowly.
There is one other pro move you can make during this recovery phase, Marmur adds.
“Wear UPF-rated clothing and wide-brim hats during all stages, even if the burn seems healed, to prevent further UV exposure,” she says. “And wear wide-brim hats during all stages to avoid further UV exposure.”
When you should see a dermatologist
The guidelines for this part are simple. “If your sunburn is making you feel sick, it’s not just a skin issue,” Marmur says. “It’s a medical one.”
Given this shift, the symptoms will be fairly obvious. The possibilities include blistering over large areas, along with fever, nausea, and signs of dehydration. We could go on, but when these things start to happen, you’re no longer in the world of sunburn treatment.
Why you should learn your lesson
Having grown up in a beach town, I can emphatically state that most people, myself included, end up repeating this experience. In most situations, there’s nothing wrong with being a slow learner, but being dumb when it comes to sunburn is different.
“Even one sunburn increases your risk of malignant melanoma skin cancer by one hundred percent!” Marmur says. “One blistering sunburn isn’t just temporary damage — it’s a major risk factor. Research shows that even a single blistering sunburn, especially during childhood or adolescence, can increase your risk of melanoma later in life by more than double.”
Melanoma is the most dangerous type of skin cancer, and it’s highly linked to intense, intermittent UV exposure — i.e., the kind you get during a bad sunburn.
“Every sunburn counts,” Marmur states. “It’s cumulative. That’s why I always tell my patients, prevention isn’t optional. It’s essential to your life now.”
Prevention is your new gold standard
Sunburn prevention isn’t something we like to think about, but to dermatologists like Marmur, it represents an essential lifestyle shift. It’s not just about experiencing pain for a few days or a week, either.
“Prevention is the gold standard,” Marmur says. “Broad-spectrum sunscreen, reapplication, UPF clothing, and smart recovery tools like green and red LED lights can literally help protect your future health, not just your appearance.”
