How much to buy botox serum?

BOTOX cosmetic is measured in units. Each bottle of BOTOX cosmetic that a doctor receives contains 100 units of BOTOX cosmetic as freeze-dried powder which must be diluted with saline-water added- in order to be injected. For maximum benefit, it is recommended that a patient receive a minimum of 25-50 units between the eyebrows to smooth frown lines, 25-35 units for forehead lines, and 10-15 units for each eye area (crow's feet), to achieve results that last 90-120 days.