Did Stone Age people cut their hair?

We don't have evidence of primitive people cutting their hair, but they did sometimes tie it back or braid it. If they had wanted to, it wouldn't have been hard--those flint tools skinned and butchered animals, so they certainly could cut hair.

Nature gave humans long hair for a reason. It protected them from cold, sunburn, insect bites, etc. And it acted as a pillow when they slept. It's also possible their hair contained pheromones (sex lures), now only found in pubic hair.

Long before that they mastered the art of plucking their eyebrows if Raquel Welch in One Million Years BC was anything to go by. :)

If they cut it at all it would be with a sharpened flint or bone. They were eminently capable of making cutting tools of flint or obsidian But I think the fashion was for long and matted.

I've often wondered this.

Possible. Stones were very sharp to kill animals with and I often thought about did they shave or cut their hair?

No their barbers did.

only those in the iron age as the scissors were made of iron ha