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Home Q & A Board Biology-Related Homework Help Cell Biology
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barry barry
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Posts: 11630
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12 years ago
Why are Botox treatments more frequently used by people after age 40? Is one treatment enough for a lifetime? Explain!
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12 years ago
After age 40 the collagen fibers thicken and lose elasticity in the lower layer of the dermis, causing wrinkles and sagging skin. Some wrinkles are caused by contraction of facial muscles. Botox relies on the toxin from the bacterium that causes botulism; this toxin is injected into facial muscles. This toxin temporally paralyzes facial muscles, smoothing out the skin. The effect of the toxin lasts only a few months; therefore the injection needs to be repeated.
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