Unnatural hair colours did exist in the past!
Yes they did, Older women where often seen with a blue or lavender rinse on their white/gray hair.
My grandmother told me that when she was a young woman in the 30s and early 40s that it was quite popular for a time for 20s and 30s aged women to go with an extreme platinum look like Jean Harlow and wear a bright colored rinse over the top (just like the ones above) for a fashionable change.
Salon Styles from 1960
Teen Boys, 1945
a boy combs his hair and carefully puts in a front wave. a wave is acceptable to boys but curly hair is not.
Pretty Curler Covers 50s, 60s & 70s
High School Fads, 1944
pic 1) Bow on top of head means Ann Mitchell is out to “Get herself a man”.
Bow in back means that Betty Dupree is “Not interested in men”.
pic 2) Bow on the right side indicates that Becky Brown is “deeply in love”.
Bow worn on left is a signal and challenge. It means Betty Chaney is ”going steady”.