Just something to think about, but in my last car, I had the headlight haze removed (perfectly) and then clear coated. Once that was done, no problems with hazing. Also, every time I wax the car, I go over the headlights and taillights every time.
The clear coat could probably be skipped if the extra $$ isn't there, but waxing the lights is an easy way to keep them beautifully crystal.
2011 E90 Lemans Blue/Bamboo Beige M3- Harrop Supercharged IG: lmb_zcp
2013 F25 Alpine White/Chestnut X3 35i- Family Hauler
2006 R53 British Racing Green/Panther Black Mini Cooper S FOR SALE! DM for details!
Past: 2010 X5M, 2014 328d, 2003 330i ZHP, 2004 330i ZHP, 2012 X3 35i
WTB!! 2009-2012 E91 328i Touring Contact me with info!