The leaves on its head are very bitter. Eating one of these leaves is known to refresh a tired body.
– Pokemon Black Pokedex
Petilil is a female-only Pokemon; it looks like an elegant little girl in a dress, and is rather cute (and I like its colour combinations). Its Pokedex entry suggests that you can eat its leaves on its head, so is that like eating its hair?
Stat-wise, it has high Sp Attack, decent defense stats, but is slow. It is White-exclusive, with its Black counterpart being Cottonee.