Better half's Forester has water in the headlights.  I've picked up a replacement set, but I was looking to see if anyone had luck repairing the composite headlights.

Thanks,

only time i have ever had water in the headlights was from chips/cracks... and the water would damage the reflective lining so it was worth replacing them.

 

Yeah, the last time I had a similar Issue was on a '91 Loyale with glass lenses. The fix? Bake the lens at 300F for an hour and silicone the holes shut.

Probably not applicable in your case and it's honestly easier to just replace the plastic lenses for way less hassle.

As far as I understand it takes a LOT of patience and time to separate the composite lens to get it cleaned up and eventually re seal things. You may get lucky and upon inspection find a tiny hole that can be glued shut?

Usually though it's small imperfections In the lens adhesive or bulb gaskets that lets the condensation in. 

An easy trick would be to drill some small holes in the bottom of the lens to equalize it to the atmosphere and reduce the possibility of condensation, but overall the few bolts you need to remove to replace the light is probably the best permanent solution...

Replaced the set.  

Old ones Free you pay shipping from 80919.