Lime works — but it's caustic, slower to set, and sensitive to humidity. Geobind uses magnesium oxide, from the same geological family as limestone but further along the natural process. The result is a binder that sets faster, reaches four times the compressive strength, and is far less harsh to work with. Standard PPE only — no specialist handling gear needed. For builders that means a simpler job site. For anyone evaluating the product, it means a genuine performance advantage over anything currently imported.