Botox injectors sometimes went overboard in the early days. That’s why you saw celebrities looking like they belonged in Madame Tussauds with their waxy pallor. These days it’s rare to see that “frozen” look on the red carpets because the injection technique has been fine-tuned for natural-looking results. Becoming an expert injector is both a science and an art. The science part of it is knowing the anatomy of the face and understanding how muscles work to create expressions