Re: removing vapour from headlights
if you're hands on, you can:
1. disassemble the lights (esp the blinkers are quite easy)
2. remove the bulbs
3. blow dry with hairdryer set to mid warm till vapor gone.
4. put into ziplock bag (or big plastic bag but tie tightly) with silica gel (think abt $10 for a rather big bottle avail at camera shops)
5. keep it there for at least 4~5 hours (just nice, take out on Saturday night, dry it and ready by Sunday morning to re-install)
6. remove fm ziploc
7. seal all fix joining area with silicon (can buy fm diy shops at less than $20)
8. re-install
Definitely effective and satisfying results.
if you're not hands on, you can:
1. find/bribe/co-erc someone who is hands-on to do fm Step1 above
total cost : less than 10 hours of work (including waiting time), less than $30 material cost.
(but be careful dun get injured while diy... medical bills not included)