Women posses what geneticists refer to as “The Clown Gene”. It’s what’s responsible for make-up in general.
Some women are heterozygous and can restrict their use of cosmetics to socially acceptable levels.
Homozygous individuals, however, lose all sense of what would be considered attractive. This leads to such things as the use of eye shadow, 3 inch false eye lashes and yes, drawn on eyebrows that look like they came off a ventriloquist dummy.
And the irony is, most dames look better without all that muck on their boat race, innit?