Images depicting the severe sunburn a man from Scotland suffered while working outside have gone viral.
Greg Binnie uploaded the photos to Twitter on June 19.
"In all seriousness, put on sun cream," he wrote. "[Second] degree burns from doing a day's work outside lol. Am in f---ing agony."
The tweet has been shared more than 20,000 times and liked over 35,000 times, with a lot of people commending Binnie for helping to raise awareness of the dangers of sun exposure.
Binnie told LADbible he was outside doing landscaping work all day on June 17. It didn't occur to him how vulnerable he was to the sun's rays until after he returned home.
"In all fairness, I thought I was feeling so hot because I was [working hard]," he said. "I knew it was hot but [I] didn't expect it to leave me looking like that."
It took another day before he realized the extent of the damage to his skin.
"I was actually back working on Sunday in the same place," he said. "I knew I was burnt but it wasn't until I got home Sunday night that it started to blister really bad."
Binnie spent the next 48 hours in bed, unable to work.
"I've been stuck in bed for two days now, which is driving me up the wall 'cause I worked Saturday and Sunday overtime to get a bit of extra dough, and here I am having to take a few days off this week," he explained, adding that he is now "stocking up" on sunscreen.
Overexposure to ultraviolet (UV) radiation from the sun or tanning beds is the number one cause of skin cancer, according to Cancer Research UK. Getting sunburnt once every two years is enough to triple a person's risk of melanoma, the deadliest form of skin cancer.
UV radiation damages the DNA in skin cells. With enough damage the cells will begin to grow abnormally, which can result in skin cancer.
Mayo Clinic recommends that you avoid sun exposure between 10 a.m. and 4 p.m., when the sun's rays are at their most intense. While outside, you should apply sunscreen with an SPF of no less than 15 to any areas of the body not protected by clothing. The American Academy of Dermatology suggests using a broad-spectrum sunscreen with an SPF of 30 or more. The sunscreen should be reapplied every two hours as long as you remain outside.