In a new study, it has been revealed that Botox injections can be an effective treatment against sadness by lessening frown lines and delaying a user's ability of identifying and feeling negative emotions. It was found in this study that Botox users reacted late to sad and aggressive statements as compared to happy statements following the scientific explanation of Botox being capable of paralyzing facial muscles.

University of Wisconsin-Madison conducted this experiment relating it to the facial feedback hypothesis. The base of the study is that facial expressions contribute to come up with an emotional response from brain.

David Havas, lead author of the study explained, "Botox induces a kind of mild, temporary cognitive blindness to information in the world, social information about the emotions of other people".

UW-Madison Professor Emeritus of Psychology Arthur Glenberg and Havas's Adviser said in a statement, "Normally, the brain would be sending signals to the periphery to frown, and the extent of the frown would be sent back to the brain. But here, that loop is disrupted, and the intensity of the emotion and of our ability to understand it when embodied in language is disrupted".