BEST drugstore shampoo/conditioner?

I've tried mane n tail.... herbal essences, but they dont seem to help my frizzy flat hair, can anyone suggest a good shampoo and conditioner for me please.. im really looking into getting soem AUSSIE products but im not sure, and i want to try tresemme, but im confused? Mane n tail, seemed to kind of dry it out and herbal essences only smelled good and i need a product that helps keep my hair silky smooth and NO FRIZZ, my hair is naturally wavy not curly but when i let it air dry it gets frizzy! And i dont like to blow dry because then itll look weird to me so i dont like that. Whats a good LEAVE IN CONDITIONER ALSO?!