You're not technically allowed to bring the other stuff onto the islands, though in my experience they don't check, I flew into Maui from Japan one time and bro

You're not technically allowed to bring the other stuff onto the islands, though in my experience they don't check, I flew into Maui from Japan one time and brought sunscreen (as you might imagine the ingredients are better across the board, including for reefs) and this wasn't checked at the agriculture scanner. Point is, the regulations to keep those ingredients out of the reefs have been mostly successful.