How Botox Cosmetic Works
The
Botox cosmetic
enters the nerve endings and blocks the release of acetylcholine, a
chemical that causes muscles to contract. The paralysis takes 1 to 5
days to occur and peaks in 2 to 4 weeks with results lasting from 3
to 6 months. Because the effect gradually wears off, allowing the
dynamic wrinkle to return, follow up treatments are necessary to
maintain the desired result. Repeat treatments may lead to improved
results as the muscle causing the wrinkles becomes less responsive
over time, a process called chemical denervation.
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