@M60A3Driver In my case, the workshop had to disassemble the headlights, clean and polish them inside and out.
Then the headlights had to be re-glued and checked for leaks.
Finally, they had to be re-installed on the car body and the bumper reinstalled.
Here in Poland, such a comprehensive headlight regeneration costs around PLN 1,300-1,500 (USD 350-400) in various workshops.
The prices I provide in my threads are for simple curiosity as to what it is like in Poland.