Interesting video. Your Giulietta is looking great by the way! I'm a polymer chemist and I think the "polymer" in this kit is likely just acetone (maybe a bit diluted). Acetone can dissolve polycarbonate. The vapor has the same interaction with the polymer but can't actually dissolve any significant amount of it so it just lets it swell or turn glassy to self-level again. Should be a like new finish but, as you suspected, without any kind of protection. It's just bare, smooth polycarbonate. A new UV barrier is essential.

Very good video comparison of the two methods, and demonstration in general on how to refurb cloudy head lights. I have done this many times on my Giulietta, each time an initial great result only lasts about a year, the main problem being that you have sanded through the factory UV protective layer. Many of the kits have a liquid for you to wipe on as UV protection, and while this works, it is temporary. I guess a little more permanent solution would be to mask up the area and spray paint it with clear coat lacquer.

Super je izašla svaka čast 👌

Very good video, useful and well explained, as usual😌. Thx!!

Very nice comparison. I have been thinking about reconditioning the headlights on my G as well, and this definately helps! Keep it up! Cheers from Denmark 🇩🇰 ♥️🇮🇹🚗

Thanks. Good job.

Thank you for this clear comparison video👍

Excellent review by far, thank you for helping me make my decision. God bless

Thanks for video

Good job

The chemical is acetone. Good thing you used protection. I know you masked just a little but you really should apply it liberally because acetone can remove paint also.

Gdje se može nabaviti taj uređaj? Odličan video, pozdrav iz Osijeka 😎

Samo da javim sa sam juce radio ovo na Fiat Bravu. Samo sto sam ja uzeo neki najjeftiniji kit od 10e(najjeftiniji koji sam uspeo da nadjem), i zastitu sonax kao sto si ti preporucio, i ispalo je odlicno. Koliko sam skapirao onaj polimer je nista drugo nego neka vrsta acetona koja topi povrsinu plastike i u pravu si morala bi zastita preko. Samo se razmisljam dal sam trebao da idem do 2500 ili 3000 vodenu smirglu mozda bi bolje ispalo, posto sam ja isao do 2000.

great video man, is it possible to provide the links we can supply both products?

I've heard those vapour kits are basically acetone steam guns - they lightly melt the top surface of the plastic and flatten it out. Not sure how well it holds up after a few more years of UV though.

Da li je polimerizacija trajnija od klasičnog poliranja? Nakon klasičnog poliranja bez uv zaštite farovi požute za manje od godinu dana.

can this method apply on the motorcycle;s windshield?

Would aplying a sprayable clearcoat also work to protect the headlight?

Clear coat but 2K like the one used to paint the car. Or ppf transparent foil i think is ok.

any updated photos on how the polymer headlight has held up?

Kako se drzi posle 3 meseci?

After the “UV protection wears or washes off this is how your lights will always look 3:18 You could have saved yourself from doing all that work & just rubbed some WD-40 or Rainey or even car wax on it & it would look the same as your finished product.

Po pedantnosti, domišljatosti rešenja, ideja za video, stvarno si na mnogo višem nivou nego što brojke pokazuju, mislim da si dostigao već taj nivo da snimaš bilo šta ljudi bi gledali… Kad bi birao best buy motor i menjač, je l’ ipak C635 i 1.4TB kao kod tebe, bez MA jedinice ili QV (sem problema sa turbom, po forumima je izuzetno pouzdan motor)?