Is there a similar conditioner to the stuff that comes with at-home hair dye products?

The best my hair has ever looked is after dying my hair with an at-home kit and then using the little package of conditioner that comes with it. My hair only looks that good with that stuff. I don't dye my hair very often, and obviously I don't want to buy boxes of hair dye to get great conditioner. Does anybody have a recommendation to a similar product that is mass marketed as a conditioner on its own? Would prefer a full bottle of something with a similar composition so my hair can be all awesome again. I *have* tried a range of drugstore and beauty shop products; just haven't found anything out there that works so well yet. Would appreciate any recommendations anyone out there has. Thanks!