The non-surgical injectable treatment on average lasts three to six months; however, it may vary between individuals as the muscle relaxation is usually observed within 2-10 days, and the peak effect is reached in about 2-4 weeks. Effects of the first injection tend not to last as long as future injections. Regular treatments help the results last longer, and importantly the freshness, quality, and dosage also have a big impact on how long the treatment injectable lasts, so it’s important to get it from a skilled and trusted physician.
The injection location also affects how long the BOTOX® treatment lasts, as the larger the muscles in the BOTOX® injection site, the shorter it lasts. For example, using BOTOX® Injectables for the forehead wrinkles does not last as long as a treatment for crow’s feet. The forehead injection would normally last about 3 months, whereas the crow’s feet treatment will normally last four months or longer.