Botulinum toxin injections, such as Botox and Dysport, are medical treatments that can also be used to help relax facial muscles. This makes lines and wrinkles, such as crow’s feet and frown lines, less obvious. They can temporarily alter your appearance without the need for surgery. Wrinkle reduction takes around three to six days to take effect and the final results will be visible in around two weeks. Results last around three to six months before the begin to fade and wrinkles return to normal.