Salt Spas are a Japanese trend aims to provide an anti-aging and stress-reducing environment for women. Accordingly named 'Saltasia', it: "uses hexagon-shaped, natural salt tiles on the floor, ceiling, and walls to create what feels like a honeycomb for relaxing. Behind the tiles are colored LED lights which, along with ambient music and sounds, diffuse smoothly and create a soothing experience for guests who can stretch, meditate, and let off stress."