Botox from Allergan is one of the widely know brands of Botolinum toxins injections along with Dysport from Galderma. Botolinum toxins are neurotoxins that affect nerves and cause muscle relaxation. It halts the ageing process of the muscles and smoothens out wrinkles and dynamic lines. Botolinum toxins blocks nerve signals to muscles and as a result injected muscles cant contract. The effects generally lasts from 3 to 5 months.