Hard work but excellent results. Removed the headlights from my 2014 Aygo.
VERY cracked / glazed and rough to the feel. I used the Holts kit as directed.
Done properly, I spent about 6 hours on the two headlamps.
Very happy with the resuls, but I did spend a lot of time.
I eventually found the best method was to have them held firm in a Black & decker workmate.