Always test first to make sure you don't have a reaction - apply to your inner wrist or forearm.
Put 5 drops (plus or minus, depending on the dryness of your skin) of serum in the palm of your hand and apply to a clean face.
This serum can be used before bedtime as part of a nighttime regimine. Apply to a cleansed and toned face (may we suggest Smooth and Balanced from our collection?). You can use in the morning, too - or add a little to your foundation or undereye concealer.