Quoting Angie, mommy of 2!:" Anyone take evening primrose oil (orally or vaginally) the last few weeks to help with effacement? How much did you take and how and did it help with labor or not?"
Used it... orally and up the hooha, lol!! Took 3 a day and stuck 1 as far up as I could at night. It didn't help and made a horrible, smelly, oily mess.
Still didn't get anywhere with dilation. *sigh*