How long protein powder can be kept after opening depends on the situation. Generally speaking, protein powder can be stored for half a year to one year in a dry environment after opening the can, and can only be stored for 3 to 6 months in a moist environment.
How long can protein powder be kept after opening should check the production date and shelf life mark on the package, usually the shelf life of protein powder is from half a year to one year. In addition, if the protein powder smells moldy odor or lumps and other abnormalities, it means that it has expired or deteriorated, and it is not recommended to consume it again.
It is recommended to buy protein powder to see the production date and shelf life, do not buy the expiration date or expired; it is not recommended to buy a large package of protein powder, because it is easy to spoil if you can’t finish it within a short period of time; it is recommended to put it in a cool and dry place to avoid humidity and direct sunlight, so as not to accelerate the deterioration of the protein powder.