This site's own benefits section lists this specific fourth point: balanced, shine-controlled skin.
This site describes it directly: Vitamin B6 is the ingredient most tied to this claim — worth reading this as the benefit most directly connected to B6's oil-and-pore-balance mechanism.
This site separately describes B6 as aimed at shine control and cleaner-looking pores, particularly in the T-zone — worth reading both statements together as this site's consistent B6-specific claim.