Perineal massage can be done by the mother or her partner. The mother should be in a comfortable place, sitting or reclining in a way that gives access to the skin around the vagina. It can be done for up to 10 minutes a day during the last four weeks of pregnancy.
Wash hands thoroughly. Ensure there are no sharp or long nails that may scratch the mother. Locate the perineum, directly below the vagina. It is the skin between the vagina and the anus. Apply some cold pressed and pure oil (such as olive oil) to this skin. Place the thumbs at the base of the vagina, allowing them the slide inside the vagina (to about the first joint) moving some oil with them. Using gentle but firm pressure, move the thumbs from the base of the vagina up the side walls as if you were making a "U". Return the thumbs to the base of the vagina, and repeat procedure.
As the mother becomes more comfortable with the stretch, you may increase the amount you stretch the skin.
**Instead I would use a water base lube. **