How can i make painted metal shiny?

Question

i have to do an assignment where i'm testing what happens when different coloured cars are left in the sun. like if the colour affects how hot the car gets. i also have to see if if the car was "shiny" or "dull" would it make a difference

i'm doing it with metal cans which i've painted..

how can i make the shiny ones shiny?

some suggestions have been hairspray, glad wrap, laquer, sealer, which i don't have much of

so any other suggestions?

Answer 1

glossy spray paint should be shiny enough.

Answer 2

Um Try Oil It Worked For Me

Answer 3

u could use ummm varnish if  u hav some in ur garage or use a certain kind of paint that drys shiny idk wat one though