Errors & Missing Information. If we've made a mistake or missed something important, please don't hesitate to contact us and set the record straight! Load up on citrus fruit, berries and green vegetable for Vitamin C Day; boost your immune system, fight off that cold and feel great!
Botox is remarkably safe, especially considering it's a powerful toxin. Occasionally, a mild headache that lasts a few hours may occur after an injection in muscles of the forehead. Very rarely, though, that headache may become excruciating and can last as long as a month.
There are a few factors that may affect how long it takes Botox to work and they are as follows: 1  Physiological differences: For reasons not fully understood, some people will find the effects of Botox take longer to materialise than they do for others. If you do not see any improvement in your appearance after 2 weeks then this may mean that you have antibodies in your body that work against the Botox toxin and therefore the effects are lessened. If this is the case you are likely to need additional higher concentration Botox injections.