Crows feet wrinkles result from muscles around the eyes which contract when an individual smiles or laughs. They are likely to be apparent when the skin has lost much of its elasticity due to age and damage from the sun’s UV rays.
Crows feet wrinkles result from the orbicularis oculi muscles around the eyes.
Botox works to get rid of crows feet by relaxing these muscles. This is done by preventing nerve fibers from releasing an excitatory neurochemical called acetylcholine. This is usually a signal that is transmitted in order to cause the muscles to contract.
Like Botox, Dysport also blocks the release of acetylcholine from nerve fibers. And this causes the crows feet muscles to relax when the individual smiles or laughs.
The choice between using Botox or Dysport really depends on the individual. Some people may find better results with Botox. And others may find better results with Dysport.
Botox results will last about three to four months
Like Botox, the results of Dysport will also last about 3-4 months
Dermal fillers like Belotero may be used to fill crows feet lines that remain after a Botox or Dysport treatment. If they were used alone, the facial expression muscles would continue to wrinkle the skin.
Juvederm and Restylane are not recommended because they are clear gels that are subject to a light phenomena known as the Tyndall effect. This may create a bluish discoloration.
Lasers may be able to offer some improvement for milder forms of crows feet wrinkles. However, the primary cause would be muscle contractions that would continue to wrinkle the skin. Therefore, it may be best to use some type of neuromuscular relaxant like Botox or Dysport to target these muscles.
Over time, as the crows feet muscles continue to contract, they will create more permanent lines that become ingrained in the skin. These are known as static wrinkles. Fine lines can be treated with a filler known as Belotero. This is can used as an adjunct to receiving either Botox or Dysport.