Botox used for medical and cosmetic purposes is a commercially produced protein. Injectable Botox works by temporarily inhibiting muscle contraction in a localized area by preventing nerves from communicating with muscles. Dysport® is very similar to the brand name product Botox and works in exactly the same way. The product begins to noticeably take effect by around day 3 or 4 and peaks a couple of weeks after administration. The effects slowly fade away over the next 3-4 months.