Conditioner- a deserted island must

I must have hair conditioner. I don't know what I would do without it.  My shampoo bottle lasts 10 times longer than my conditioner.  I have seen movies where it's anywhere from 100 -500 years ago and the women with curly hair look spectacular. No frizz, no pouf, no baseball cap. Tropical rain forests, parched deserts, mountain peaks. Location had no effect on their hair.  It's false advertising. I dread to think what my hair  would have looked like back then. What did these women really do for their hair? I shudder to think what my blunt cut, unconditioned, mass of hair would have looked like. One big long braid I am thinking. Under a stylish hat though of course.