This is the most common non-surgical procedure in the world. For 2 decades, millions of women and men have been using botulinum toxin for facial rejuvenation. It works by relaxing muscles of facial expression, smoothing gestures and, therefore, reducing or eliminating expression lines, especially in front, between the eyebrows, crow’s feet, lower eyelid and nose, which gives a more youthful and relaxed face. The procedure is very fast, with minimal pain, the effect lasts between 4 to 7 months. It has no long-term consequences. For Dr. Merino, it is very important that the effect be natural and not so obvious, so as not to leave the “botoxed face”, that is, to make it look better without others easily noticing that a toxin was placed.