I have brand new from Mazda headlights on my mx3
I cleaned my old headlights over and over again then someone randomly showed up to a meet with brand new in the box headlights. Clean headlights make a huge difference in the look of the car.
I've also done the toothpaste trick, it works but fades away very quickly back the the old dirty look.
92 MX3 Turbo ($100 junkyard KLG4) 11.904 @ 124.3mph, 14psi, DOT approved Hoosier drags, pump gas.
NSCRA 2009 FWD Drag Radial Finalist
HIN/NOPI Supershow Class Winner - Miami 2010 - Street-Sport Compact-Mazda
Links:
Pretty Pic,
GoFast Pic,
Timeslip,
Track Video
As of July 2011 the MX3 has been retired and sold.