Botox is a drug used for three different groups:

1) Cosmetic - teenagers do not have wrinkles - no value there

2) Medical - Spastic Contractures - Botox has been used in Cerebral Palsy and other paralytic disease to help with the spastic contractues. Possibly for younger individuals

3) Functional - Axillary Sweating, Migraines, etc - would have to decide on a case by case basis.

Restylane:

1) Cosmetic - Wrinkles and insufficient Lips - probably not til they are 18.

2) Functional - Nasal deformity, Acne Scars - maybe in the mid teens