Unlike the other rocket engines used during the GLXP mission, the propulsion subsystem used to control the descent of the Lander is being developed by the White Label Space team. The engine will use hydrogen peroxide and kerosene as propellants. A key benefit to using these chemicals is that they are non-toxic thus making them much safer to handle. This permits low cost testing, at least an order of magnitude cheaper than what is possible with toxic propellants such as the hydrazine types. The engine can be operated in monopropellant mode by allowing the hydrogen peroxide to decompose into oxygen and superheated steam. Then by mixing these chemicals with the kerosene spontaneous combustion will ignite the engine which eliminates the need for a dedicated igniter. All in all, the system being developed by WLS will not only reduce costs thanks to the use of non-toxic propellants but also provide reliable control of the Lander's descent to touchdown.