Botulinum toxin is a protein that can weaken the functioning of muscles and is used for both medical and aesthetic purposes. Cosmetic or aesthetic uses of botulinum toxin are concentrated in the upper half of the face.
This region has 3 zones where it is usually possible to use the toxin safely. One is the so-called rooster parts, wrinkles that occur on the sides of the eyes by the action of the muscles that close the eye and that occurs characteristically with the smile. Proper application in that region allows to reduce the contraction of that muscle and reduce the amount of wrinkles
The same is used in the forehead area and the frown area. In addition to reducing wrinkles, the proper use of botulinum toxin allows to give a different shape and height to the eyebrows to favor a better aesthetic result. In the lower half of the face can be used to soften the famous puppet folds that occur at the sides of the mouth, to soften some wrinkles of the lips, but as I said before, its most common use is in the upper region of the face.