Neurotoxins (such as "Botox") use a purified protein from the botulinum toxin that has been proven to safely and effectively stop the nerve from sending messages to the muscle to move in ways thatcause the skin the wrinkle/crinkle up and display those pesky wrinkles like the "11's" in between our brows, the horizontal lines across our foreheads, or the "crows feet" to the side of our eyes when we squint, smile, or make other expressions.