Six years of experience using an advanced algorithm for botulinum toxin application.

Background: Botulinum toxin (BTX) products continue to be widely used for facial rejuvenation. Variables to consider prior to BTX treatment include the anatomical area to be treated, gender, muscle mass, ethnicity, skin thickness, and the effects of aging.

Objective: To describe a treatment algorithm which has been developed for facial rejuvenation to help physicians to easily and systematically customize BTX treatment, and to describe its use in a large number of patients.

Durability, Behavior, and Tolerability of 5 Hyaluronidase Products.

Background: Hyaluronic acid (HA) dermal fillers are commonly used in cosmetic dermatology. Due to differences in their physical characteristics, HA fillers demonstrate different sensitivity to degradation by hyaluronidase (Hase) because of HA concentration and differences in cross-linking. Similarly, there are differences in the activity of Hase products depending on source and concentration.