A new study has found that Botox™ treatments may be beneficial to the patient's mood as well as their physical looks.
Carried out at the University of Wisconsin-Madison, the study looked at the effect of wrinkle relaxing treatments on the perception of emotions.
David Havas, lead author of the study, commented: "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."
This is not the first piece of recent research into the mental affects of the treatment.
Discoverynews reported that Murad Alam, an associate professor of dermatology at Northwestern University, has also found a link between mood and Botox™ treatment.
"When we are sad, angry or frustrated, but we have Botox on board, our muscles do not contract to create furrows between our brows and deep creases on our foreheads," Mr Alam told the news agency.
He added: "This lack of frowning and wrinkling works backward to adjust our emotions and make us happier."