Here's Exactly How to Treat Sunburn on Lips

You exfoliate them, you gloss over them, maybe you even spend hundreds to semi-permanently plump them — but are you taking steps to prevent your lips from getting sunburnt?

Yep, sunburn on lips is a very real thing. In fact, your mouth is even more prone to sunburn than other areas of your body because of the unique nature of the skin that comprises your lips. "[The lips] have a thinner layer of skin compared to the rest of the skin on the body, and very little melanin, which helps provide some natural protection from UV rays," says Birmingham, Alabama-based board dermatologist Corey L. Hartman, MD. 

And here's a fun fact to dazzle your friends with: Your lower lip is more vulnerable to sun damage than your top one, "because the nose offers some sun protection for the upper lip," adds Philadelphia-based board-certified dermatologist Nazanin Saedi, MD. 

We know, we know — you didn't come here for dinner party fodder. In fact, you're probably reading this because you're experiencing some combination of lip swelling, stinging, and sensitivity that you suspect might have been caused by sun exposure. So, without further ado, read on for exactly how to determine if your lips are sunburnt — plus how to prevent it from happening in the first place.

• Corey L. Hartman, MD, a board-certified dermatologist at Skin Wellness Dermatology in Birmingham, Alabama.
• Nazanin Saedi, MD, a board-certified dermatologist at Dermatology Associates of Plymouth Meeting and clinical associate professor at Thomas Jefferson University in Philadelphia.

What does sun damage on lips look like?

The initial signs your lips have been sunburned appear about two to five hours after extensive sun exposure, says Dr. Saedi. How a sunburn presents itself, of course, depends on the level of damage inflicted.

Symptoms of a mild case can include dryness, irritation, and redness. If your lips fit that description 24/7, first of all, may we suggest a few of our favorite hydrators? And second, ask yourself if you feel heat radiating from your lips, which is a telltale sign of sunburn, says Dr. Hartman. If you're suffering from a moderate to serious burn, those symptoms kick into overdrive in the form of blisters, bleeding, pain, and extreme sensitivity. 

As with any sunburn, you're going to be dealing with the immediate consequences for anywhere from three to five days. And the state of your lips might get worse before it gets better: "When the lip heals, the dead skin peels off and sheds," says Dr. Saedi, noting that it's normal (and, in fact, a sign of healing) to also experience some itchiness during the process.

Can sunburned lips cause cold sores and blisters?

But notice we said those symptoms are the immediate consequences — because unfortunately, a sunburn on your lips can sometimes cause more trouble down the line. 

"The heat and the stress to the skin of a sunburn can lead to the development of cold sores," says Dr. Saedi. Cold sores, of course, are not to be confused with the aforementioned blisters that result from sunburn in and of itself. "The blisters [associated with] cold sores are different in that they are usually clustered together and painful," according to Dr. Saedi.

Sun damage on the lips can also result in lingering discoloration in the form of hyperpigmentation. But far more disturbingly, "a bad sunburn on the lips, just like on other parts of your body, can lead to an increased risk for skin cancer," says Dr. Hartman. "I do see patients with skin cancerous growths on the lips, including melanoma, which is the deadliest form."

How do you treat sunburn on lips?

That said, if you notice an unusual spot on your lips or a sore that won't heal, visit a dermatologist as soon as you can. But to treat the symptoms of lip sunburn in the short term, there are a few steps you can take from the comfort of home.

"If you find yourself with a mild sunburn, you can use a cool compress on your lips to alleviate some of the swelling and bring down the heat in your lips," says Dr. Hartman. This trick works nicely when used in conjunction with an over-the-counter anti-inflammatory medication like Advil, which helps relieve mild pain.

Applying aloe vera gel to the lips can also help ease irritation. (Dr. Saedi suggests chilling it first to maximize the soothing benefits.) On the flip side, at this stage it's best to avoid any lip products with petrolatum, like Vaseline. "Those will actually seal in the heat and prolong the burn and any painful symptoms," Dr. Hartman says.

Can you prevent sunburn on lips?

Now, here's the good news: sunburn on your lips is totally avoidable if you're diligent about applying SPF. While Dr. Hartman says you can apply your favorite facial sunscreen over your lips for some protection, using a lip balm with SPF 30 or higher is ideal.

"Apply it at least 15 minutes before you go outside and reapply after swimming, sweating, or eating and drinking, since [that] can take off your SPF lip balm just like it can your lipstick," says Dr. Hartman. 

And with a new wave of non-chalky, comfortable-to-wear options now on the market (Dr. Saedi likes Sun Bum Mineral SPF 30 Sunscreen Lip Balm and EltaMD UV Lip Balm Broad-Spectrum SPF 36), you might find yourself applying SPF lip balm even more often than you "need" to. And that's not lip service.

Now shop some of our favorite facial sunscreens:

• The 13 Best Sunscreens for Sensitive Skin That Dermatologists and Allure Staffers Love
• The 28 Best Facial Sunscreens for a Healthy and Protected Complexion
• The 19 Best Tinted Moisturizers With Sunscreen That Smooth and Protect Skin

Watch a pro surfer's entire routine:

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