One of the most excellent products I have ever bought. It costs a little more but it rewards you fourfold. It works for shutters, plastics on scooters, headlights, and a lot more. Perfect!

I followed the instructions.
Gold charcoal.
Maybe it gave shine to the car bumper plastics for 1 week. (I didn't wash it afterwards, so I can't say that I rinsed it off)
On the engine, which had worn-out paint on the gas tank (Harley '95 model), I didn't see any difference.
Oh, and it smells bad.
It's not cheap either.
I recommend silicone spray for all your plastics, it lasts longer and costs around 3 euros.
And for the paint, no matter how much it hurts the wallet, it needs a special one, with polishes, special creams, etc

I painted the front bumper of my car that had faded, but there was no noticeable difference

In a car from 2005, it is the first time I used Polytrol.. it really looks like new after applying it. The only thing left is how long it will last.. Additionally, it is very economical, as it requires a minimal amount since it is like oil and spreads very easily.. Also, I should mention that it doesn't need much time to dry. It is ready for cleaning with a soft cloth in 10 minutes.. Also, I close with this. I had opened it 2-3 years before using it and even changed the bottle since I shared it with someone else... It showed that it has no problem with time and worked perfectly.. I will definitely buy it again.. value for money

It's great for aluminum, it refreshes the paint.
Also, for plastics that have been exposed to the sun, it makes them look like new.

Unbelievable product. I have been using it for years on my motorcycle and other surfaces. Very good results and durability.