Lol when i FIRST USED c1, I used about 3/4 bottle of the 50ml on my 2013 Tacoma Short Bed.
Then i started seeing shadows and haze ALL OVER, *AFTER* i applied it to my entire truck, i had to polish the entire thing again. Although it didnt take much/long to get rid of the haze.
I was thinking more / thick coat is better. But it is the opposite for C1.