What is the result of injecting botox into the zygomatic muscles?

Injecting Botox into the zygomatic muscles results in decreased muscle movement. Botox works by blocking the signals from the nerves to the muscles, effectively paralyzing them temporarily. When injected into the zygomatic muscles, which are involved in elevating the corners of the mouth when smiling, the muscle activity is reduced. This reduction can lead to a softer smile or less pronounced lines around the mouth, as the muscle is no longer able to contract as strongly.

This effect is often utilized for cosmetic purposes, such as minimizing the appearance of smile lines or to alter the way a person's smile looks, but the primary mechanistic result of Botox on zygomatic muscles is the decrease in their movement.