In this paper. we show the relationship between (skew) deductive system and (skew) filter in residuated skew lattices. It is shown that if a residuated skew lattice is conormal. then any skew deductive system is a skew filter under a condition and deductive system and skew deductive system are equivalent under some conditions too. https://www.markbroyard.com/flash-pick-weleda-skin-food-75ml-online-sale-flash-save/