What is algin? is it Diatomaceous earth used as an insulating material,

Brown algae,

A substance produced by brown algae used to thicken foods.

Diatom shells

Algin is a chemical taken from brown seaweeds. It is used to make medicine. Algin is used to lower cholesterol levels and to reduce the amount of heavy chemicals including strontium, barium, tin, cadmium, manganese, zinc, and mercury that are taken up by the body