My older sister had curly hair in the 60s when straight hair was fashionable. (Think Ali MacGraw in Love Story)
She used orange juice cans to roll her hair, at night, to straighten her hair after washing it. (Still don't know how she slept with that.)
Me? I had my Dad's board straight hair. And in the 70s, curly hair was then fashionable. Sooo, my Mom gave me a home perm. Never let your mother give you a home perm.