Fighting ginger prejudice wherever they find it.
J.K.Rowling consistently describes Harry and Hermione as having wild, untamable hair. In Hermione's case, hers in 'bushy' and 'shaggy', Harry's famously sticks up in every direction and resists combing – it's something he shares with his Dad. Yet I think the only movie his hair looks even vaguely accurate is 'Prisoner of Azkaban'. As for Emma Watson, come movie 2, she's got delightful wavy, curly locks that I can't help but look at and think 'I wish my hair did that!'.
Version 1 - the fluffy hair Hermione.
Version 2: the poster-girl for wavy hair.
Let's take a look at the hair in Harry Potter movies and see just how right I am:
Sorcerer's Stone - Justin Bieber without the side-swipe.
Prisoner of Azkaban: messy, just as it should be.
Half-blood Prince: despite the fluffy half-fringe that is slightly reminiscent of an 80's poof-fringe, still disappointingly clean and well-groomed.
That's just what happens when a movie gets made in Hollywood.