How long after the application is the effect of Botox visible? - Botox®/Dysport® - Smoothing out the wrinkles - Forums & Discussion 

One week after the injections the effect must be clearly visible, but it will be optimum after two or three weeks.

After 3 to 10 days.

The effect of Botox last 4/6 months

It generally takes five to seven days to take full effect.

Effects starts after 72 hours (starting the effect within 24-48 hours is expected too), increasing in the effect is continued over the upcoming 14 days (up to 21 days more effect is expected too). Many factors might play a role in this effect timing, such as (but not limited to) the depth of the wrinkles, concentration and specification and the thickness of elastin-collagen content of the skin, facial muscle muscles bulk, environmental factors such as heat and humidity, and personal style, and social intelligence and activities of daily living.

You can expect to see results within days after your treatment. The appearance of wrinkles and lines may continue to diminish for up to one week. For more information check out our website at www.niagaraplasticsurgery.com

the effect starts after 48 hours and it is full and complete in 14 days.