Dr. Bronner's liquid castille soap
You can use it for almost everything. I use it to wash my hands, body, even brush my teeth. You can also use it to wash laundry, clean your floors, wash dishes, etc. Some of the uses are not praticeable like laundry as you would have to use too much for it to be cost effective. But is great for brushing teeth, you can brush your teeth and eat seconds later with no nasty after taste, plus it is totally fluoride free. Another plus is that it is highly concentrated, you are supposed to cut it with water. Thus it lasts a bit. The ingredients are also all natural, organic and fair trade:
Water, Organic Coconut Oil*, Potassium Hydroxide**, Organic Olive Oil*, Mentha Arvensis*, Organic Hemp Oil, Organic Jojoba Oil, Organic Peppermint Oil*, Citric Acid, Tocopherol