Now, the water molecules near the surface now feel much more comfortable because they can interact with the polar heads of our detergent. And this means when we apply a force onto the surface of that liquid because these water molecules feel much more comfortable they're not constrained anymore and they can move around freely. When we apply a force, they will have no problem moving around that force. And that's exactly why the surface tension drops. So this means that the water molecules can rotate and move much more freely than before. And this lowers their ability to withstand any force because once we apply force, they simply move around that force and so our surface tension drops.