Question: According to the Sephardi mekubolim is one supposed to wipe one’s lips while the fingers are still moist from mayim acharonim?
Answer:
Firstly, it is interesting to note that Rashi (Yoma 83b) writes, in the context of mayim acharonim, that the regular way of those who wash their hands is also to wipe their moustache while their hands are still moist.
The Kaf Hachayim Palagi (Siman 25 Se’if 2) however, writes that one should only use minimal water for mayim acharonim, and one should not wipe one’s lips with the mayim acharonim water, and one who wishes to clean his hands or mouth should do so either before or after mayim acharonim (and he writes that this can be reconciled with Rashi in Yoma).
The Ben Ish Chai (Shelach Year 1 Se’if 8) and Kaf Hachayim Sofer (Siman 181 s.k. 6) rule similarly.
Therefore, based on Kaf Hachayim (Palagi and Sofer) and Ben Ish Chai it appears that the most ideal for one who follows the Sephardi mekubolim is to wipe one’s lips prior to mayim acharonim, and then to wash mayim acharonim only on one’s fingers.