How old you generally have to be to get Dermal Fillers and is there a difference between surgeon's office and medspa?

At age 20 you should be able to have dermal fillers if they are indicated. Each office may have their own age requirements for treatment. The key is to select a provider with experience. Many will have before/after photos you can review.

Dermal fillers can be useful in enlarging the lips, camouflaging a nasal hump, or treating deep acne scarring as young as age 18, the age of legal adulthood. Typically fillers are not used in a 20 year-old for facial wrinkles because you haven't had enough time to form significant wrinkles. I'm not aware of differing policies for minimize age at a plastic surgeon's office versus a medspa.