Why Don't I Have a Philtrum?

In humans, the philtrum is formed where the nasomedial and maxillary processes meet during embryonic development. When these processes fail to fuse fully, a cleft lip may result.

Why do I have no cupids bow?

Lips With an Undefined Cupid's Bow: This is a sign of someone who can actually lack emotional boundaries. They can be overly giving and be too much of a nurturer and not practice self-care. They're often responsible people, but they have to realize it's not always their job to take care of the problem.

What is the rarest lip shape?

Cupid is the rarest of all lip forms. Cupid has a powerful, youthful appearance, and is very prominent in pre-adolescent females.