Botox- by Allergan. What exactly does Botox do?
Botox injections block certain chemical signals from nerves, mostly signals that cause muscles to contract. The most common use of these injections is to temporarily relax the facial muscles that cause wrinkles in the forehead and around the eyes.

In general, Botox lasts 3-4 months.

Dysport- by Galderma
Natural-looking. Fast-acting. Long-lasting.
Don’t let your frown lines between your eyebrows define you. For adults who want a natural look, Dysport is a natural-looking, fast-acting 1-3, long-lasting 1, 2, 4 prescription injection proven to help smooth moderate to severe frown lines between the eyebrows—without changing the look or movement of the rest of your face.