Botox, Revolax, Sculptra, Hyaron, Juvederm: all sorts of products—perhaps not all entirely legal—sell like hot cakes in Bouba’s Lebanese beauty salon. Skillfully, though not always gently, she jabs a constant stream of clients with all kinds of injectables to temporarily reduce their facial wrinkles and frown lines. 　　Director Omar Mismar films the patients from a fixed position ...