If the dilator slips out, gently push it more deeply into your vagina. When you remove it, wash it with a mild soap and water. A woman is often given one dilator of the size needed to fit her vagina. If she is trying to overcome pain, however, or needs to stretch out a vagina that is too small, she may use a series of dilators. She can start with one about the size of a finger and slowly go to larger models until her vagina is large enough to allow a man's penis to enter without pain.
Dilators work best when used early to prevent vaginal shrinkage.
The dilator will not be nearly as effective. If you go for many months without a sexual relationship, it becomes very important to use your dilator to keep your vagina in shape. Two years ago I switched to an GYN who is also an oncologist. I was very uncomfortable during my PAP smear and I told her I sometimes leaked some urine when I coughed. She told me that I had vaginal atrophy and that this can affect your urine control.