Some interesting quotes:
Let the head of men be clipped, unless they have curly hair. But let the chin have the hair. ... Cutting is to be used, not for the sake of elegance, but on account of the necessity of the case ... so that it may not grow so long as to come down and interfere with the eyes. Clement of Alexandria (circa 195 AD), 2.286.
It is enough for women to protect their locks, and bind up their hair simply along the neck with a plain hair-pin, nourishing chaste locks with simple care to true beauty. Clement of Alexandria (circa 195 AD), 2.286.