Recently read comments on face slap on another site. One lady indicated hesitation. Perhaps connotes too much violence and hitting. I myself am not violent by nature. Just imagined that a light but clear slap would put the male in his place if he needed correction. A way to make the authority of the woman clear. Seems like a quick slap during the first argument or disagreement would be a moment of truth in establishing parameters of the relationship.
Not to be a broken record, but it really depends on the dominant woman on what she wants to do. Face slapping can be somewhat dangerous if done very haphazardly, depending upon the fragility of the face, so a dominant woman would need to take some care and effort with what she is doing. By contrast, a dominant woman does not need much effort at all to say "one demerit for you" and know that when you get home you would be receiving one demerit of punishment, whether that is 10 strikes of the cane or whatever else she desires for punishment. Also, if immediate punishment is desired there are many techniques including face slapping and also others which do not use pain.
Ms. Georgeann Cross ( http://francescaspizza.com/) makes extensive comment in her online book regarding sexually enslaving a male. Specifically she emphasizes the value of a face slap when a male misbehaves as a shock to his ego which often times allows the defense system to drop to a vulnerable place where an important teaching moment may occur. Ms Cross emphasizes that it be used sparingly. I highly recommend Georgeann Cross's on line free book before employing this technique. I read it on line first, then printed it out and re-read it again then presented it to my mate for evaluation.
I first received face slapping, when learning in the "trade school" in Europe,because i touched rather improperly another Female Student, to my shock She immediately face slapped me, grabbed me by my ear and want to take me to the office,i kneel down and beg Her,She cool of and later i was trying to please Her,i was Her slave ,without knowing, for the rest of the semester,jack,los angeles