His hair is "ses cheveux" (masc.) in French.
a hair bun is 'un chignon' in French.
Long hair is "les cheveux longs" in French.
ginger hair is 'les cheveux roux' in French.
'messy hair' in french is 'cheveux en désordre'
Il a les cheveux gris is how you say he has grey hair........
Coiffeur
mes cheveux
les cheveux
An hair tie is "un élastique à cheveux" in French.
"J'aime tes cheveux." = "I like your hair."
Dandruff-free hair translates as 'des cheveux sans pellicules' in French.