'messy hair' in french is 'cheveux en désordre'
Translation: Pelo desarreglado
A messy hair gel.
"hair" is "haar" and "hairs" are "haare" in German
Your hair is naturally messy due to genetics and hair type.
Harry Potter has messy jet black hair.
Glattes Haar.
messy, bronze hair
messy, messy, messy
Just put it in a bun, if it is curly, when it is in a bun it will look messy.
The one who has the messy hair, because he was the one the did the good job on the other hairdresser.
Not sure how much my opinion is worth here... even though this will show as an 'expert answer', I have no expertise in this. But I'm gonna say go for the messy bun.