Your hair is like a flock of goats descending from the hills of Gilead.

Guess that was considered beautiful, millennia ago.

This is probably the imagery… (except dark mountain goats)

https://static.vecteezy.com/system/resources/thumbnails/028/184/284/original/a-flock-of-sheep-and-goats-walk-in-rows-along-a-summer-mountain-meadow-aerial-view-video.jpg

Your teeth are like a flock of sheep just shorn, coming up from the washing. Each has its twin; not one of them is alone.

Cares for personal hygiene, i guess?

More likely good health and youth to be honest, elsewhere he says her breath smells of apples (in a good way lol)…

Well, in those times they didn’t really have dentists, so having all one’s pearly whites in a adulthood was not common.