The product acts like a medicine for 4 to 5 months. It is therefore pointless to use it more often, since the body could get used to the treatment and not respond as well.
Botulinum Toxin does not destroy the muscle, nor does it paralyse it definitely after repeated injections. Losing the habit of creasing the treated zones means that it can be injected less often, sometimes less than once a year, without wrinkles reappearing.