what do you recommend?
I would recommend treatment of the glabellar muscle group between the eyebrows with adequate dosing and then following up with your injector a couple of weeks later - dermal fillers could be placed at that time to further soften the 11-lines. Make sure you discuss the risks of filler injections in this particular area with your injector.
The best treatment for frown lines, glabellar lines or 11's is Botox to relax the muscles that create these lines. However, for some patients, some lines or dents persist. Superfical lines may be from the outer dead layer of skin being creased by the active mucsles. As the skin turns over (about 6 weeks), these lines improve. For those who still ahve dents, a little filler such as Juvederm or Restyane can help.