You can use the cream any place you have a discomfort.
For example, some customers use it on the face to relieve eczema.
However, if you are also applying a suppository deep inside the vagina, you do not need to apply the cream inside because it is redundant. You can use it outside where the suppository does not reach. If you do not use a suppository, you can apply a little bit of the cream inside. But it may not be necessary because even if you apply it outside, it can work to cause moisture inside.
You may apply the cream as many times as you feel comfortable. But you must not over apply. A tiny bit (1/4 of a dime size) at a time is sufficient. Over applications may cause intolerance.