There is no face generator in NWN2. Appearance customization is handled by selecting a base head, then choosing hairstyle and facial hair and tinting it.
Humans will have around 15 base heads, half-orcs 6 heads, elves 6 heads, dwarves 6 heads, half-elves 6 heads and sub-races will have between 3 and 6 heads each. There are between 10 and 25 hair and/or facial hair combinations. (ALFA A-Kon report )
Hair can be a little longer than shoulder length. Dwarven beards are all around chest length.(ALFA A-Kon report )