What is botulinum toxin type A?

Botulinum toxin type A belongs to a class of neuromodulators used in non-surgical cosmetic medicine. Brand names include Botox, Dysport, and Xeomin, which contain the same active ingredient but differ in formulation, protein load, and onset timing. These products are injected into facial muscles to reduce the appearance of dynamic wrinkles, the lines that form from repeated facial expressions like frowning, squinting, or raising the eyebrows.

The mechanism works by blocking the release of acetylcholine at the neuromuscular junction. This temporary paralysis prevents muscles from contracting fully, which smooths out overlying skin and prevents new wrinkles from deepening. Results typically become visible within 3 to 7 days, with full effect reached around 2 weeks.

Duration is temporary and reversible. Most people maintain results for 3 to 4 months before muscle function gradually returns and wrinkles begin to reappear. Some individuals find results last slightly longer or shorter depending on metabolism and muscle mass. Regular maintenance treatments are needed to sustain the effect. Ontario plastic surgeons offering non-surgical cosmetic procedures can advise on whether botulinum toxin type A is appropriate for your goals and skin type.