Liquid formic acid tends to supercool. Without these crystals the water would supercool instead of freezing. During hibernation tortoiseshell butterflies are able to supercool in order to keep from freezing. Another example is a product that can supercool the beverage in a conventional freezer. It can be purified by distillation, where its tendency to supercool becomes evident. The album's third single, titled "Supercool", was premiered on Lowe's show on 4 October 2011.