The lava shell massage is a treatment in which clam shells are used as a tool. Porcelain shells can also be used but the natural effect will not be received. These clams have been used as a food delicacy in South-East Asia for hundreds of years, but the shells used to be thrown away. Shells found discarded are now being recycled and used for the lava shell massage. The heat required for the massage is not achieved through hot water like in the hot stone massage. The practitioner just inserts a small pouch of minerals, salt water and algae into the shell and this triggers a reaction which causes heat that can last for 1-2 hours.
The difference in temperature between the two surfaces causes the blood vessels to contract and expand, thereby stimulating circulation. This type of a massage can boost the autoimmune system and reduce water retention in the body.