Does Botox and Restylane cause me to look older?

Neither Botox nor Restylane will "accelerate" any aging process or appearance. It is true and your issue is common in that if you do not continue using these treatments you will revert back to baseline (how you were before receiving the treatment). So, many people choose to do these treatments periodically before significant occasions or some people prefer to keep their effect maintained by repeating treatment at intervals that coincide with loss of effect of either Botox and Restylane.

Neither Botox nor Restylane are permanent.

As an aside , I am not aware of "whiteheads" as a side effect or result of treatment with either Botox or Restylane.