FFXIV How to Unlock the Form and Function Hairstyle
The Form And Function hairstyle introduced in Patch 4.45 of Final Fantasy XIV is obtainable all year long if you're brave enough to go and farm in Eureka Pagos. In fact, the hairtsyle can be obtained from the Happy Bunny Lockbox.
The hairstyle can also be obtained during the current Treasure Trove Festival Event for a few Tomestones of Pageantry.