ABSTRACT
The platysmal band is taken between the thumb and index finger of the nondominant hand and a series of injections placed in the muscle bundles from the mandible to the clavicle as necessary. Injections of 2 U/5sU with a maximum dose of 40 U/100 sU per side are given intramuscularly with a distance of approximately 2 cm between the injection sites. The skin and subcutaneous fat in this area are very thin so subdermal injection will also be effective. When treating horizontal necklines, the fibers of platysma that insert into the skin will be relaxed. Inject the wrinkles intradermally with 3-4 injection sites per side using 1-2 U/2.5-5 sU of toxin at an injection depth of approximately 2 mm, and spacing the injections approximately 1-2 cm apart. Botulinum toxin has a blocking effect on eccrine sweat glands as well as apocrine glands. The desired aesthetic result is to prevent visible wet patches on clothing, and moist skin or sweaty hands.
