If there is enough milk leftover, I keep your milk for at least a year. If you would like to purchase another piece, please email me at hello@MLLkeepsakes.com to make sure I still have milk left over. If I confirm I still have left over milk, please reference your old order number in the notes section of the new order. We ask that you never send the last of any inclusion and keep a stock at home. The ONLY inclusion that will be returned is ash.