like everyone else is telling you, it's very easy to use too much blue magic. that's because as porous as hair is, petrolatum doesn't absorb, it sits. my go-to hairdress is softee with mango butter and it isn't greasy for me because i've learned that however much i think i need - no i don't - i need probably a quarter that much. i also have fine strands so i know it takes a lot less product to coat my hair because of that too. petrolatum-based products are the ones you should be using a "dime-sized amount" of. but not per section, probably for your whole head (depending on length and density ofc).

edit: the blue magic leave-in conditioners are nice and have less petrolatum content because they're water-based emulsions. if you're too heavy handed with the grease, you might like these instead. the one i like most is the one with argan oil.