neurotoxin
Neurotoxin, or what I like to call “tox” is made of of botulimtoxin which acts on the nerve impulses to prohibit muscle contraction. This leaves us with less wrinkles and also less facial movement. There are varying degrees of tox/ And it doesn’t have to mean a “frozen forehead” although if that is your desire, that is totally fine! Everyone is different. We can still preserve facial expression while still softening wrinkles.
The exact amount of units you need really depend on your unique facial structure. However here is a helpful drawing of what you can expect.