The answer is relatively easy: Often times it’s a combination of both that gives the best satisfactory results.
In general, neuromodulators (Botox, Dysport, or Xeomin) relax the underlying muscles that are responsible for dynamic lines,i.e. the lines that appear with facial expression. The effect is very pleasing and lasts for an average of 3 months.
Any line that remains two weeks after injection of Botox ( or one of its brethren), is a candidate to fill with a dermal filler. As a general rule, anything that remains after Botox, may be treated with Dermal fillers.
Dermal fillers are meant to correct static lines ( lines that exist even without facial expression), and for general volume loss with aging, such as loss of prominence of the chin, loss of volume of the apple of the cheek, sunken temples, sunken cheeks, sunken eye sockets (tear trough), lip volume loss, smile lines, and skinny/ veiny hands.
The result of Botox treatments are maximal at two weeks, whereas the results of dermal fillers ( except for Sculptra) are evident immediately.
If you still wonder what may best fit your budget and unique situation, a free consultation with your aesthetic practitioner is the next step.