Dandruff. Dry skin. Scratch your head, away it comes.
What's the problem? Dry skin.
What's the solution? Moisture that stays soaked in.
What do you put on dry toast? Butter. Fat. Oil.
Petroleum jelly.
Vaseline.
The jelly of petroleum. The natural goop, from natural oil. What they're collecting in the photograph.
Head and Shoulders burns, the dry skin away. With chemicals. That's the tingle.
That's not healthy. Can't be.
Vaseline is hella cheap.
It works.
What's the Head and Shoulders for? Taking your money without solving the problem.
A hundred years ago or whenever, a room full of billionaires (future) said "people don't like having dandruff. What can we sell them?"
"How about this chemical sludge?" says one of their slaves.
"Does it work?" someone half gallant asks.
"It tingles," the chief slave replies. "So it feels like it does. Also that tingle is the scalp on chemical fire, so the loose skin is gone. So it seems like it works."
"Great!," says the billionaire. "Bottle it."