Botoxs stranglehold on the de-wrinkling market may have found a match. A new randomized study published online in the Archives of Facial Plastic Surgery, has found that Botoxs competitor Dysport is better at treating crows feet.

The study compared the effectiveness of both cosmetic drugs is smoothing wrinkles in 90 volunteers. The researchers from the Mass Clinic in San Francisco and University of California, San Francisco randomly injected Botox in one side of the face and Dysport in the other. The researchers then evaluated the results on a five point scale and asked the participants to indicate which side they preferred, according to a Time article. Dysport proved to be significantly better than Botox in treating crows feet. At rest there was no discernible difference between the two drugs but when the participants contracted their facial muscles the difference was made more apparent. After 30 days the patients themselves professed their preference for the side of the face that was treated with Dysport.

June 23, 2011 1:09 AM EST

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