Any lawyer will answer "it depends" to a basic question. The same holds true for how long a given salsa will keep, even if refrigerated indefinitely.
Salsa that you didn't quite finish and left on a fridge shelf can lose some of its freshness due to a number of variables.
According to PepperScale, the life of your salsa is determined by its storage method and whether you created it yourself.
According to PepperScale, homemade salsa should last four to six days before being discarded.
That, however, is predicated on the fact that it was kept in an airtight container in the refrigerator.
Does It Go Bad suggests adhering to the "best by" date printed on store-bought salsa labels. This only applies if the container has not been opened.
Once the seal is broken, the shelf life of salsa in a jar is approximately two weeks, and that of refrigerated foods is approximately one week.
Beezzly shares advice on how to extract all the flavor from salsa. These include storing it in a cool, dark location and always using a clean spoon.
The best approach to prevent it from spoiling is to consume it when it is still fresh, which is also the most delicious technique.