The pole outside is a medical advert
The red and white spiral outside a BARBER shop is a leftover from surgery. For centuries the barber was also the surgeon: he cut hair, pulled teeth, set bones and let blood, because he already owned the sharpest RAZOR in the village and steady hands to go with it.
The pole advertised the bloodletting. Red for blood, white for the bandages, and in some versions a brass basin at the top for catching what came out. Barbers and surgeons were formally separated in England in the 1740s, the surgeons took the medicine, and the barbers kept the pole.
A colourist is doing chemistry
Hair is dead protein. That is why a haircut does not hurt, and also why colour is harder than it looks. To change it permanently, a COLORIST has to open the outer scales of each hair with an alkaline solution, strip out some of the existing pigment, and deposit new pigment inside — all at once, on a head that has already been dyed twice before.
Get the maths wrong and the result is orange, green or falling out. TINTING to cover grey is easier; lifting dark hair several shades lighter is a genuine technical skill, and it is why the same appointment can take three hours and cost more than a new coat.
Anyone can pick up the scissors in Britain
This surprises people: hairdressing in the United Kingdom is not a licensed profession. There is no legal requirement to hold any qualification before cutting a stranger's hair for money, and the industry has campaigned for years to change that.
In most American states the opposite applies, with hundreds or thousands of supervised hours required before a licence is issued. Both systems exist, and the British one rests mostly on the fact that a bad HAIRDRESSER does not stay in business very long.
The training that does happen is old-fashioned and effective. An APPRENTICE starts by sweeping up, washing hair and watching, then graduates to a BLOWDRY, then to a simple TRIM under supervision, and only much later to a full cut with SCISSORS on a paying client.
There is a reason for the slow ladder. A mistake here cannot be undone, hidden or apologised away — it walks out of the SALON on somebody's head and stays there for weeks, which concentrates the mind considerably.
Paid to make people feel better
A good deal of this work is not really about hair or NAILS at all. A regular client sits in the same chair every six weeks for years, facing a MIRROR, and talks. Hairdressers, the BEAUTICIAN doing a FACIAL and the MASSEUSE all end up hearing about divorces, diagnoses and job interviews.
Several countries have trained salon staff to spot signs of domestic abuse, because they are among the few professionals who see the same people repeatedly, up close, in private. It is a people job first and a technical one second, which is exactly why it cannot be automated.