"Please refrain from watching the content if any of the following applies to you: - Have any mental or physical health concern and may have to see a doctor regularly.
"We shall not be liable for any injuries, illness, and damages claimed to be caused by watching the contents."
After the message, the advert shows a view from the windscreen of a car as drives along a road through falling snow.
A little while later the shadowy figure of a young girl appears up ahead in the middle of the road.
For what happens next, watch the video above.
The advert has received largely rave reviews on Twitter, with one user saying: "The most terrifying ad you will ever watch! Turn up the volume."
Loanna Deverdie (?@Loanna8717m) tweeted: "Actually jumped out of my skin!"
"Basically, if you scare easily then don't watch this," wrote Dez Bruce ?(@dezbruce1h).
User HANBEN ?(@hbenassi2m) said: "Told my mum I felt sick and she showed me this advert to try and make me feel better. #cruel."
- UK Independent