Headlights

We checked the seven special-purpose polishes. The experiment is simple: on a wiped headlamp, the illumination was measured with a light meter, then polished, the illumination was checked again and the percentage improvement was determined.
WHAT IS SUITE
Lux (lx) - a unit of measurement of illumination for the SI system. 1 lx is equal to the illumination of a surface of 1 m² with a luminous flux of 1 lumen. The illumination in the sea at a depth of about 50 m is approximately 20 lux, the illumination in the living room is about 50 lux.
Ok so polishes
Polishing paste for metals, art. DW8319
The declared manufacturer - Doctor Wax, USA
Estimated price - 165 rubles.
Polishing paste for metals

No, we didn’t mix anything up: in a separate frame the message: “Can be used to polish plexiglass headlights.” Yes maybe. And even with convenience - thanks to a simple compact package in the form of a jar. On this, the pros end.
It is difficult to grind, the surface remains unclear, small visible scratches are not eliminated. Nevertheless, the illumination improvement measured by our device was 20 lux.
NANOX Perfect Shine, "Polish for clear plastic", art. NX8344
The declared manufacturer - Doctor Wax, USA
Estimated price - 290 rubles.
NANOX Perfect Shine, “Clear Plastic Polish”

According to the annotation, it contains nanoscale functional components that instantly penetrate the microrelief and provide a quick effect.
It is a pity that the particle size cannot be checked, but the polish is convenient to apply and easy to grind, after which minor scratches and turbidity disappear. Illumination improved by 40 lux.
PlastX, Clear Plastic Cleaner & Polish, art. G12310
The claimed manufacturer - Meguiar's, Holland
Estimated price - 310 rubles.
PlastX, Clear Plastic Cleaner & Polish

The composition is designed specifically for cleaning and polishing transparent plastic. The packaging is convenient, there is a dispenser, but for some reason there was no Russian annotation.
The polish is easy to apply and rub. If the clouding is slight, you can remove it and improve the illumination by 30 lux.
Headlight Lens Restoration Kit, art. 09135
The declared manufacturer - Permatex Inc., USA
Estimated price - 730 rubles.
Headlight Lens Restoration Kit

This is a whole set for polishing headlights, containing a small bottle with the composition, four different emery papers, a flannel napkin and even gloves (they, however, immediately torn). Instead of instructions - a link to an English-language video.
The test results could be better: after removing small scratches on the plastic with sandpaper, there were traces of its use - they did not eliminate the polish. The improvement in illumination was 15 lux.
Plastic Cleaner, art. 80183
Declared Manufacturer - Permatex, USA
Estimated price - 195 rubles.
Plastic cleaner

According to the annotation, this product, cleaner and polish in one bottle, gives shine to products made of polycarbonate glass and other plastics. It forms a hydrophobic film. True, applying the composition to the headlight is inconvenient: because of the wide jet, part of the polish falls on the wing and hood.
It is easy to grind, but instead of the promised shine, a white coating remains. However, the illumination still increased by as much as 30 lux.
Clear Vue Glass Polish, "Super Clear Glass", art. TC60R
The claimed manufacturer - Turtle Wax, UK
Estimated price - 280 rubles.
Clear Vue Glass Polish, Super Clear Glass

According to the owners of the "turtle", it is ideal for silicate glasses, but also suitable for hard transparent plastic. Sorry, did not provide a dispenser. Small scratches on the headlights remained, like a whitish coating. Illumination increased, but only by 10 lux.
Glass polish
The declared manufacturer - NPKF Color-B, Russia, by order of Sapphire LLC
Estimated price - 70 rubles.