Imagine a world where we stored our memories in the hair on our heads rather than in our brains. What social and cultural consequences could arise from this?
Some details about the memory storage: (sorry this got a bit long)
This is long term rather than short term memory. Short term memory is still in the brain. It takes about a day from an event happening to the particular section of a hair strand storing that memory to grow from the scalp.
Facts/skills can still be stored in the brain, so if you shaved your head you would still be able to function as a person (somewhat), you just wouldn't be able to remember any events from your past. For example if you watched a film you might store facts about the plot in your brain, but to picture a character in your head you would need your hair - or to replay visuals/sound from a particular scene you would need your hair. As another example, if you were an artist thinking up an idea for a painting then this image would be stored in your brain, but if parts of it were based directly on memories then the image in your brain may deteriorate if you lost those memories.
If you concentrate on a memory then you can locate roughly where in your hair it is stored. Also, touching a particular section of a hair strand stimulates the memory stored there, so with a bit of work it's possible to precisely locate a particular memory.
Memories are created and fade at the same rate as in the real world.
The positioning of memories in the hair has some pattern, but it's not highly logical (apart from older memories being further down a hair strand) and you don't control it.
Memories occasionally end up in the moustache/beard, but not many of them - unless you have a certain disorder causing lots of memories to be stored in facial hair.
I'd prefer it if you considered consequences in a more old fashioned society, one in which little rigorous scientific study has been done about memory storage - think Europe ~200 years ago.