We recommend using the ampoule in your evening routine at night and only up to 2 to 3 times in the week (there is an exception for this, read in acne-prone skincare collection text). Use the ampoule only when you will not use a serum, as the ampoule is a serum but in a higher concentration. Break the top stick off and use it to push the bottom up to dispense the product out. Use as much needed in the ampoule to apply on the parts of the face you’d like. Allow sufficient time for the ampoule to penetrate into your skin and it to dry before going to your next step.