  We derive the generalized Skyrme model as a low-energy effective model of the
Sakai-Sugimoto model. The novelty with the past is the presence of the sextic
term equal to the topological charge squared. This term appears when the
$\omega$ meson, and the tower of states on top of it, are integrated out. We
claim that, in the small 't Hooft coupling limit, the instanton is well
described by a Skyrmion arising from the low energy effective Lagrangian of the
Sakai-Sugimoto model. The sextic term plays a dominant role in this limit.
Moreover, when a pion mass term is added we recover the BPS Skyrme model in the
small 't Hooft coupling limit.
