how come my botox has taken affect on my forehead first after only one day?
Although Botox can work after one day, especially if the muscles have not fully recovered, it's quite uncommon. Dysport does work in 24 - 36 hours. I'd be curious if Dysport was used instead. I prefer it to Botox for just that reason.
Most patients receiving Botox (botulinum toxin) injections begin to notice effects in 3-5 days, and the maximal effect may take up to 2 weeks to be fully appreciated. Some patients may have a quicker response, just as some patients have extended results (6-8 months over the usual 4-5months).Another conisderation is that you were injected with Dysport, another very similar but unique, form of botulinum. Dysport tends to have a more rapid onset, but I find the effects do not last as long as Botox.