The Swedish sentence:
“Så här tar du bort vit patina från glas och får dem att glänsa med ett coolt knep.”
translates naturally into English as:
“Here’s how to remove the white film from glass and make it shine with a simple trick.”
or
“How to remove the white haze from glass and make it sparkle with a clever trick.”
In this context, “vit patina” refers to a white film, haze, or cloudy mineral buildup that can develop on drinking glasses, often from hard water or repeated dishwasher use.