Botox is a neurotoxin. It´s a very strong poison and still people gladly accept botox here and there in their bodies. We really don´t know yet what it actually do to us, that´s for the future to tell. But common sense says clearly: No way!
Instead you can exercise the muscles in your face and lift chins, get gorgeous lips and clear eyes. HERE are some videos how to do it. Like the rest of the body the face got muscles. If you don´t use them you´ll look older then you are. But you can also build up more muscles, like high cheekbones. Healthy - in contrast to botox.