What is the muscle that causes crows feet?

The muscles that cause crows feet are the orbicularis oculi and the smiling muscles: levator labii superioris, zygomaticus major and minor.  Here is a picture of these facial muscles.  When we try to improve crows feet with botox, these are some of the muscles that we try to weaken to decrease the formation of wrinkles.  Botox is injected in the sides of your eyes in the skin to weaken these muscles.  By doing this, we make the muscles weaker so they are less likely to form these dynamic wrinkles.  Dynamic wrinkles are the wrinkles that show up when you move the muscles of your face.  They are more pronounced when you move your facial muscles.  Static wrinkles are the wrinkles that are so etched in that they are present when you are not moving your facial muscles of expression.  Dynamic wrinkles are mostly effected by the actions of botox.  Over time, with continued use of botox, the static wrinkles can become more improved.  This is done because with botox, eventually allows the skin to remodel and reduce the static wrinkles.  This action of improving the static wrinkles however takes a long time and requires regular and consistent use of botox.

I hope that was interesting for you!

Thanks for reading, Dr Young

Dr Young specializes in Facial Cosmetic and Reconstructive Surgery and is located in Bellevue near Seattle, Washington

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