It normally takes around 4. Dr tim explains that the time it takes for botox to work is actually different to the time it takes for you to start noticing the results. Pin On Tedi How often will i need the treatment? How long does botox take to work uk . Enquire for a free quote now! The effect will last about three to four months. ©2021 hearst uk is the trading name of the national magazine company ltd, 30 panton street, leicester square, london. You should notice an effect within 14 days. The harley medical group advise: Ad contact top clinics for botox® in uk. While most patients will notice a change within the first five days after having the injections, it may take up to two weeks for the results to become fully visible. The toxin does not work immediately. Enquire for a free quote now! Considered a relatively safe and straightforward procedure, according to a 2016 study, you can typically expect to see and feel the full effects of botox 10 to 14 days...