Rajan and Eli will both be able to produce a slippery substance from their skins which will make it impossible for someone to grab hold of them, even with a tight grip. The ability will enable them to slide on surfaces and to escape from being held onto, and could also counteract adhesion. The substance produced could appear all over their bodies if they wanted, but they could also choose to produce it on any specific part of their bodies which they wish to lubricate.