Doctor, the package of the protein bar has been opened. What happened?

It may be caused by the untimely cooling.

Be sure to keep it in the refrigerator, because protein is a biological product and easy to distinguish.

Protein Bar is a snack that supplements protein. It is packaged like a biscuit. The content of protein is about 20g, so protein can be supplemented in time.

Protein stick is helpful for athletes, bodybuilders and outdoor people.