Good candidates will be over the age of 18 and will have some visible dynamic wrinkles forming on their faces that would benefit from neurotoxin injections to prevent them from worsening. It is a good option for those who are looking for a preventative treatment, as they can be injected into the areas of the face that are likely to develop significant dynamic lines long-term to minimize the muscle movement so that the wrinkles are not able to develop until this type of treatment is no longer continued. They are however also very effective in treating dynamic wrinkles that have already formed, making them a great option for many patients of all ages. If you have previously had any allergic reactions or adverse reactions to injectables, you may not be eligible for neurotoxin injections due to it no longer being considered a safe treatment option for you. Neurotoxin injections may also not be as effective in those with very progressed and severe dynamic wrinkles, including most patients who are over the age of 64 who may not have ever had this type of cosmetic treatment before. As well, patients who are currently pregnant or breastfeeding will not be eligible to receive neurotoxin injections temporarily.