In summary, the differences between Botox and fillers are:
Botox: This freezes muscles to stop creases and wrinkles caused by facial expressions. These are typically found in the upper face, such as the forehead and around the eyes.
Dermal fillers: These use hyaluronic acid and similar substances to “fill in” or plump areas that have lost volume and smoothness. This includes wrinkles around the mouth, thin lips, and cheeks that have lost fullness. They may also be used on forehead wrinkles, scars, and other areas that need extra volume for a smoother look.
Botox results last 3 to 4 months. Dermal filler results vary, depending on which filler is used.
Because Botox and fillers are different substances designed for different uses, they can sometimes be combined in one treatment. For instance, someone may use Botox to correct lines between the eyes and a filler to correct smile lines around the mouth.
Consult your board-certified dermatologist before taking any medical or aesthetic procedure.
Resource: Healthline WebSite