On April 2, the Journal of Neuroscience reported that scientists injected rats whiskers muscleshard to imagine a rat with a saggy face, but bear with mewith Botulism toxin and found that the toxin which causes a muscle-weakening illness had spread to their brains. Of course, the results arent conclusive. The researchers didnt use the FDA approved Botox specifically and previous studies have shown Botox to be safe. An Allergan spokeswomanthey make Botoxsaid, The authors used a laboratory preparation of botulinum toxin and did not use Botox, and data suggest that different preparations of botulinum toxin react differently in both the laboratory and in clinical practice.
Regardless, I think this latest study should make us all think twice about the potential price were willing to pay just to make our faces look younger, if not expressionless.
Read more about the study here