This is not a favorable effect because it limits those water molecules, it traps those water molecules around the non polar substance and it limits the amount of hydrogen bonds that can form between these water molecules and that is not a favorable effect. Now, what happens if instead of taking one nonpolar substance we take two nonpolar molecules and place it into our water? What will happen now? Well, the same exact thing will happen at first. Initially what happens is once we place the two non polar molecules into water, those water molecules will form a cage effect. They will become trapped around the nonpolar substance and that is not a favorable process.