A woman has shared how her face burnt so badly that it swelled to twice its normal size after she sat in the sun for an hour.
Eva Jones shared a video on TikTok showing the burnt her face became in the current heatwave.
The video, which has since gone viral with more than 700,000 views, illustrates how her face goes from a pale colour to a deep shade of red.
In the video, she said: "Tanning for an hour won’t do much."
When the clip then shows how red her face is, she said: "Guys I'm laughing but it’s not actually funny."
She added in a second snap to her followers: "An update girlies, my face has swelled up."
She later explained she ended up suffering from heatstroke.
Heat stroke is a condition caused by your body overheating, usually as a result of prolonged exposure to high temperatures.
It's synonymous with the body's cooling mechanisms being overcome by heat resulting in a high core heat usually above 40C in adults, and 40.5 C in children.
Heatstroke symptoms are mainly increased body core temperature and mental status changes.
Heatstroke symptoms not to ignore include high body temperature, altered mental state or behaviour, alteration in sweating, nausea and vomiting, flushed skin, rapid breathing and a racing heart.
According to the NHS, if someone has heat exhaustion, you should move them to a cool place, get them to lie down and raise their feet slightly, get them to drink plenty of water and try an cool their skin.
The National Health body also advised them to stay with them until they're better.
"They should start to cool down and feel better within 30 minutes."
You should call 999 if you are feeling unwell after 30 minutes or not sweating even when feeling hot, have a high temperature or feel confused.
It comes as temperatures reached a high of 38.1C in the UK on Monday, as the Met Office warns tomorrow will be worse.
Doctors have warned of a danger to life or potentially serious illness from the blistering temperatures.
Recommended precautions include avoiding physical exercise, keeping to the shade and maintaining ventilation, drinking plenty of water and using in-date sun cream.
People have been warned against using rivers and lakes to cool off due to the dangers of swimming in open water.
