Headlights 'halo' in windscreen

[tezzerh]

I haven't driven my 64 reg Berlingo much in the dark but have just done a long overnight trip. I noticed that when headlights were approaching they seemed to form a halo, in the colours of the rainbow, in my windscreen. It wasn't just me! My wife confirmed she could see the same thing. I've never had this before with my previous Berlingos. Any ideas anyone?

[ron]

Give it a good clean with Meths,it's probably got some sort of contaminant on it.

[Jed Clampit]

I told you ron to leave the Meths alone
But as ron wrote there is some thing on the windscreen that need's cleaning

[geoff]

I told you ron to leave the Meths alone
But as ron wrote there is some thing on the windscreen that need's cleaning

  A tip for you Ron .......  I use IPA , does the same job yet looks like a glass of water ( tastes better too ) 

[Jed Clampit]

I told you ron to leave the Meths alone
But as ron wrote there is some thing on the windscreen that need's cleaning

  A tip for you Ron .......  I use IPA , does the same job yet looks like a glass of water ( tastes better too ) 

LOL 

[jayjay2cv]

What is IPA? I am only 46, am I too young???

[Jed Clampit]

What is IPA? I am only 46, am I too young???

I think it's old timer's BEER 

[RolyG]

What is IPA? I am only 46, am I too young???

I think it's old timer's BEER 

 Indian Pale Ale ?

[3rensho]

How about isopropyl alcohol. The stuff they swab your arm with before you get a jab.

[ddb]

Isopropyl Alcohol, used for cleaning camera lenses so it must be pretty safe with coatings.