Take them apart (assuming you haven't already to clear them) and get the condensation out. I used a heat gun when my original OEM one's did this once I cleared them. Once the condensation is out, you can put them back together. Heating the seal (black stuff) around them will help them go back together and reseal. I aslo added a bead of clear silicone around the little gap where the two pieces slide together. Then, let the silicone dry. I no longer had any condensation problems. If there's not an adequate moisture barrier around the lens, it's not sealed, and moisture can get in, and cause condensation inside the lamp.
"Can you imagine what it feels like to have someone sit you down and tell you that you're dying? The gravity of that, hmm? Then the clock's ticking for you. In a split second your awe is cracked open. You look at things differently - smell things differently..... But most people have the luxury of not knowing when that clock's going to go off. And the irony of it is that that keeps them from really living their life. It keeps them drinking that glass of water but never really tasting it."