What would happen if you brought shampoo to ancient Greece? Day one, you arrive in Athens with mint shampoo. Locals use olive oil and metal scrapers.
Hair permanently greasy. You lather it onto a wrestller's head. White foam erupts.
Mint fills the air. Onlookers recoil in terror, convinced you've summoned a thundercloud. Day two, crowds line up, trading gold coins for your shampoo.
Every scraper in Athens abandoned overnight. Hair flows freely in the wind. Day seven.
Shampoo reshapes Greek society. Hair height becomes a symbol of status. The Senate mandates pre-debate washes.
Convinced mint sharpens the mind. Athens smells clean for the first time ever. Week one.
The olive oil industry collapses. You launch an anti-dandruff version, saving Athens's scholars from constant white flakes. You monopolize mint and rosemary and make an absolute fortune.
Month one, voluminous hair becomes noble status. The oily are banned from temples. Priests declare their souls too heavy.
Sculptor carve lighter area styles.