Non-dairy creamers or coffee whiteners are liquid or granular substances intended to substitute for milk or cream as an additive to coffee, tea, hot chocolate or other beverages. They do not contain lactose and therefore are commonly described as not being dairy products, although many contain casein, a milk-derived protein. Dry granular products do not need to be refrigerated and can be used and stored in locations which do not have a refrigerator. Liquid non-dairy creamers should be tightly capped and refrigerated after opening. Some non-dairy creamers contain sweeteners and flavours, such as vanilla, hazelnut or Irish cream. As with other processed food products, low calorie and low fat versions are available for non-dairy creamers.
Answer this question, making sure that the answer is supported by the text: does non dairy creamer need to be refrigerated?

* no;
* yes;
no