Rumor has it that Ben Stiller and Cameron Diaz only needed one shot to create their unforgettable hair product scene in There's Something About Mary.
But being the true pro he is, Jemaine Clement, was willing to try many, many shots in his recreation.

Giphy
bet he has nice smelling hair
Guess it all depends on what he ate before each "shot". I have heard that different things can make it .... never mind. I've revealed too much.