You know you're getting a sunburn when your skin turns pink or red, feels hot and tender to the touch, and may start to swell, usually appearing within a few hours of sun exposure. As it develops, you might notice itching, pain, and eventually peeling as the skin heals, with severe cases bringing blisters, fever, chills, or nausea.
Symptoms
Skin can start to turn red within 3 to 4 hours but reaches peak skin reddening and inflammation between 12 to 24 hours after exposure. Increased blood flow to the area, increases heat and swelling as the lymphatic system sends fluid to that area to try to repair the damage.
The "sunburn finger test" (or blanching test) checks for skin damage: gently press a finger on a red area; if it turns white (blanches) and quickly returns to red (within a few seconds), it's a normal reaction, but if it stays red or dark (doesn't blanch), it indicates deeper damage needing attention, though on darker skin, the color change is harder to see, focusing on tissue texture/darker spots instead of just white blanching. This test helps assess burn severity, distinguishing normal redness from more serious injury.
There is no guarantee that the sunburn will turn into a tan, but it is very important to look after the affected skin as best you can.
Plus, being wet makes your skin more vulnerable. Water can actually magnify UV rays slightly, especially if droplets sit on your skin, creating tiny lenses that intensify exposure in certain spots (yep, science is wild).
But beware: continuing to tan after a burn is a big no-no. It can worsen damage, delay healing and put you at risk for serious skin issues like premature aging and skin cancer.
How long a sunburn lasts depends on its severity: Mild sunburns typically result in redness and some pain and can last three to five days. Moderate sunburns can leave skin red, swollen, and hot to the touch. This type of burn can take about a week to heal completely.
Possible symptoms of sunburn include: red, tender skin that is warm or sensitive to the touch. blisters that develop hours or days later. severe reactions (also called "sun poisoning"), including fever, chills, nausea, or rash.
Try these self-care tips for sunburn relief:
Yes, a sunburn often feels worse on the second day because redness, pain, and swelling typically peak around 24 hours after sun exposure, continuing to develop for up to 48 hours before starting to improve, with peeling and blistering often appearing a few days later as the body heals.
When you have a sunburn, avoid oil-based products (like petroleum jelly, butter, coconut oil), alcohol-based products, and numbing creams with benzocaine/lidocaine, as they trap heat or can cause irritation, worsening the burn; also skip hot showers, peeling blisters, and re-exposing the skin to the sun. Instead, use cool compresses, aloe vera, or moisturizer, and drink plenty of water to help your skin heal.
The symptoms of sun poisoning
The signs of a sunburn may not appear for a few hours. It is typically at its worst at 24 to 36 hours after sun exposure and resolves in 3 to 5 days.
For mild to moderate sunburn, apply nonprescription 1% hydrocortisone cream to the affected area three times a day for three days. Try cooling the product in the refrigerator before applying. Treat sunburned eyes.
A sunburn doesn't directly turn into a tan, but the skin's response to severe sunburn (more melanin production) can cause a darker, tan-like color as the redness fades, though both sunburn and tanning signal skin damage from UV rays, increasing cancer risk. A tan is the skin's attempt to protect itself by producing pigment (melanin) after UV exposure, but when damage is too great, you get sunburn, followed by peeling and new skin that might look darker or pinker before settling, say experts at Healthline.
And while you won't be able to get rid of sunburn redness overnight, you can help relieve some of the more uncomfortable symptoms with some simple sunburn remedies. In this article, we'll talk through the best sunburn treatments to relieve pain, itchiness, and swelling, leaving you feeling refreshed and comfortable.
Here are my top 4 go-to foods that help soothe summer sunburn.
Some factors make you more prone to sunburn: People with fair or sensitive skin burn more easily. Higher altitudes have thinner air, which means stronger UV rays. Being outdoors during peak sunlight hours (usually 10 a.m. to 4 p.m.) increases your risk.
Yes, 30 minutes in the sun can be enough for some people to start tanning, especially those with medium to darker skin tones or when the UV index is high, but fair-skinned individuals might burn in that time, so it heavily depends on your skin type (melanin levels), the sun's intensity (UV index), and your location, with shorter times recommended for lighter skin to prevent burns.
Sunburn is skin redness that will go away after a few days. Sun poisoning is a more serious irritation that shows up as hives or blisters.
The University of Edinburgh team found different parts of the body are much harder to brown in the sun. Buttocks are the least easy to tan compared to backs, they told the journal Experimental Dermatology. Hard-to-tan areas will need more sun protection against cancer, they warn the public.
Sunburn indicates acute damage to the skin's outer layers. Exposure to UVA radiation induces melanin synthesis, which causes tanning. While a tan may appear to be a healthy response, it shows skin damage and is the body's attempt to protect deeper layers of the skin from future UV exposure.
The only way to tan safely is by using self-tanning sprays or lotions. Fortunately, self-tanners have come a long way since the days when they left skin streaky and the color of orange cheese-puffs. Self-tanning products are safe and generally don't cause irritation to the skin.