Package: 30ml/Bottle Active Ingredients: PDRN, Water Mannitol, Sodium Hyaluronate, Sodium Chloride, Zinc DNA, Copper Tripeptide-1 How to Apply: Please apply with the rolling tip on scalp. You can use this serum during the micro needling treatment of PN cell Vitoxidil hair growth PDRN. Apply daily at night time after washing your hair.