Enjoy a relaxing spa experience while putting your feet in warm water.  After thirty minutes you will discover different colors and textures in your water.  There is a chart made available to help you decipher what you see.  Common feedback is the feeling of calmness and clarity.

"Any exposure to aluminum may disrupt or inhibit several enzymes and change protein synthesis, nucleic acid function, and cell membrane permeability." (National Health Institute.gov) 

Now manufactured in large quantities for it's anti-rust and corrosive properties. It is used in everything from deodorant, to hot water tank anode rods and even vaccines. 

"Exposure to low levels of cadmium in air, food, water, and particularly in tobacco smoke over time may build up cadmium in the kidneys and cause kidney disease and fragile bones. Cadmium is considered a cancer-causing agent." (CDC.gov) 

Cadmium replaces silica in the cells and has a lower electrical conductivity. Preventing the cell from communicating properly with surrounding cells. Over time this leads to disease as described by the CDC.