A gummy smile, also known as excessive gingival display, refers to a smile in which an excessive amount of the gum tissue is visible when a person smiles. This condition can impact one's self-esteem and confidence. Botox, a neurotoxin derived from Clostridium botulinum, functions by inhibiting the release of acetylcholine, a neurotransmitter responsible for muscle contractions. When injected into the hyperactive muscles that cause the upper lip to rise too high when smiling, Botox weakens these muscles, resulting in a more balanced and aesthetically pleasing smile. It is crucial to note that the effects of Botox are not permanent and typically last for several months, requiring repeat injections to maintain the desired outcome.