How to use: Turn applicator ON. Tilt chin up and roll applicator over the entire neck, from the décolleté up to the jawline. Gently squeeze the tube to dispense a thin layer of serum while rolling. Return the applicator to the OFF position and continue rolling it in an upward motion over the skin to massage in the serum. Keep the chin up until serum dries. Then apply your recommended Dermalogica moisturiser. Use this serum morning and night.