First, ensure the skin to which you apply the product is clean. If using the bottle, dispense one pump (which will dispense the required amount of liquids from Chamber A & B) onto the palm or fingers of your hands, rub briskly together to activate the formula, then apply to skin in circular patterns.
If using the sample dual sachet, mix the contents of one serum and one activator together in the same manner as the bottle mentioned previously, then apply.