Neuromodulators are injectable solutions that temporarily suspend muscle movement, in turn reducing the appearance of dynamic wrinkles on the surface. The most well-known neuromodulator is Botox Cosmetic. When Botox is injected into underlying facial muscles, it softens dynamic wrinkles. Dynamic wrinkles are wrinkles caused by muscle contractions like smiling (which can cause crow’s feet) and raising of the eyebrows (which can cause horizontal forehead lines.) It is a great option for busy men and women because they can come in for treatment during lunch or between errands. Youthful Botox results last between three to four months.