Metro Beauty Centers uses several brands, Botox of Allergan, from the USA, Nabota and Hugel from Korea. We only charges you by the units, you therefore only pay for what is needed, and nothing more. Some other clinics may charge per area on the face, but depending on your skin condition, it may be disadvantageous to you and you may never know how many units have been used.
Botox is the trademark of Allergan and has effects lasting up to 5 to 6 months, Hugel and Nabota are also excellent products, but the effects of the injection usually last shorter (3 to 4 months).