ONSENSOU, is a personal care brand with hair conditioner, shampoo and body wash as its main products. Born in the city of Beppu, one of Japan’s most famous hot spring (onsen) towns, the developers of this product wanted to figure out what it was that made the skin so beautiful after a soak in one of these hot springs. They narrowed it down to two natural materials that they incorporate into many of their products: hot spring algae (an amazing conditioning ingredient) and hot spring yeast (a fabulous moisturizing ingredient). ONSENSOU has plenty of amazing products that make the most of this hot spring research.