Il a les cheveux (+ adjective: blonds, chatains, bruns, roux, courts, longs, bouclés,...) means "he has (adjective: blond, light brown, brown/dark, red, short, long, curly ...) hair.
Il a les cheveux gris is how you say he has grey hair........
il a les cheveux très gras
"il a les cheveux blonds"
raide means stiff, not supple in French. Il a les cheveux raides > he has straight, stiff hair.
Il a les cheveux marron et les yeux marron.
gris, grise une souris grise = a gray mouse Il a les cheveux gris = he has gray hair
the french word is "a" from the verb "avoir" she has blond hair = elle a les cheveux blonds he has a bike = il a un vélo.
I have brown eyes in French is: J'ai marron yeux.Or J'ai les yeux bruns
des cheveux noirs et courts
Il a une coupe de cheveux.
il a les yeux verts.
Il a rasé ses cheveux. = He has shaved his hair.Il a des cheveux rasés. = He has shaved hair.