Botox results will be shown within 7-10 days. We usually recommend scheduling your second Botox treatment to your masseter muscle in 3 months, and then after that you can usually push treatments out to about 4 months. But it really depends on the strength of your muscle. "This answer has been solicited without seeing this patient and cannot be held as true medical advice, but only opinion. Seek in-person treatment with a trained medical professional for appropriate care."