Don't do anything to it at all, and no products at all, for at least 48 hours. You will get ingrowns if you clog your pores with creams/soaps/lotions.
So cool water, till the redness and heat go, and no exfoliation for a week, no creams lotions etc for at least a few days.
I have never used a moisturiser above my knee for any waxing, no reason I know of why one would use it at all on a bikini line etc.