What's a hair gel that will give your hair a greasy look?

I'm coordinating hair and makeup for my high school's production of Grease, and I want the guys' hair to have that kind of wet greasy look. I'm looking for something that isn't expensive, as the boys will each be expected to buy their own. Thanks in advance!What's a hair gel that will give your hair a greasy look?
Depp hair gel.What's a hair gel that will give your hair a greasy look?
vaseline....thats what we used in our high school production. maybe mix is with some gel to hold it better :)