Deka Onda Coolwaves Laser This non-invasive body contouring machine regenerates, reduces and remodels by targeting cellulite, localised fat pockets and skin laxity in a safe and effective way. Onda Coolwaves technology has been proven to cause the death of fat cells, allowing complete removal of the cell as part of a natural process. It penetrates deep, demolishing the cell membranes of fat cells to dissolve localised fat deposits.