It looks like it but, no, this is not cotton candy. Instead of sugar, researchers pour polymers into a cotton candy machine to make a heap of wispy strands. The polymer fibers are combined with hydrogel into a substance placed on wounds to keep them moist and help them heal. When the fibers dissolve into the hydrogel, they leave behind a tiny network of channels that resemble human capillaries. When this hydrogel is put on a wound, blood and nutrients can flow through the channels, making it easier for the tissue to heal.