No matter which baby formula you've purchased, you should always store both opened and unopened containers in a clean, cool, and dry place, such as a pantry, drawer, or cabinet (away from your stove, oven, heating ducts, and hot water pipes.) Try also to keep them away from direct sunlight. Once opened use your formula within 4 weeks and ensure (when not in use) that the lid is securely closed to prevent any foreign objects or contaminants from getting into your tin. Do not store containers of baby formula powder in the fridge, as the humidity can cause the baby formula to form clumps. Also, note that powdered baby formula is not suitable for freezing.

If you prefer to transfer the powder to a different container, then we recommend transferring it into an airtight container (we think that glass food storage containers work best) and writing the date you opened the formula on the lid.