Fillers for Glabella and Radix Region?

The radix (hollow at the top of your nose) is one of the areas that a true "non-surgical" rhinoplasty can be performed. A hyaluronic acid filler, such as Restylane or Juvederm can be used to fill this hollowed area to camouflage the newly formed bump.
Using a hyaluronic acid filler is also reversible and if you don't like the result, it can be dissolved with another injection. However, it is important to go to a rhinoplasty specialist since the filler should be placed deep and used to augment the skeleton of the nose and not be placed too superficially. There are risks of using fillers that should be discussed with the treating doctor.

If you'd like to see more volume under the skin of your nose, you could consider injectable fillers. There is no downtime, and procedures can be performed painlessly with topical anesthetic.
You should consult a board-certified dermatologist or facial plastic surgeon familliar with the use of fillers in the nose. You would also benefit from seeing before and after photos of fillers in the nose.
Best regards.