Dermal fillers are substances injected into the face to fill lines and add volume to areas such as the lips and cheeks. They are not permanent and usually last between six and eighteen months. Similarly, Botulinum toxin (Botox) injections relax the facial muscles to smooth out line and wrinkles, such as frown lines and crow's feet. Botox is not permanent and usually lasts for three to four months. This book is a comprehensive guide to the clinical use of fillers and Botox. Beginning with an overview of the history and basic science of cosmetic injectables, the book is...