In the US, we don't have JuveDerm 3 but rather similar products of JuveDerm Ultra and JuveDerm Ultra Plus. The data shows that the combination of Botox plus filler works better and longer than filler alone (study by Carruthers in Dermtologic Surgery with 18 weeks of Restylane durability in the glabella vs. 32 weeks of durability if Botox was used to pre-treat the area). So, Botox or Dysport can be very helpful if used first to reduced the movement of the area, and then filler placed about a week later. The filler than doesn;t have the muscles working across it, so work better. The important caveat is that the glabella has blood vessels (supratrochlear artery and dorsal nasal artery) that could be compromised with filler injections, so it is imperative that fillers be used very carefully. Use of a hyaluronic filler is recommended, as the enzyme hyaluronidase is then available to potentially be of assistance in the case of vascular compromise. For safety purposes, use of low filler volumes and considering a few treatment sessions with a hyaluronic filler is commonly recommended.