Everyone soap has a 3-in-1; DD likes the lavender-aloe fragrance (not super-heavy) while I prefer the citrus or the coconut. There's also an unscented variety (linked directly.) We used to buy it at Wegmans or Target, but haven't been looking too closely.
I've also used the Trader Joe's 3-in-1, but didn't like the fragrance.
If you have longer hair, adding a separate conditioner for ends is a good idea.