Here is an innovative design called the Cold Compress Band-Aid, which is effective for hemostasis. It is formed by the chemical reaction of H2O and NH4NO3; the special structural design allows you to easily break the capsules containing NH4NO3 inside the Band-Aid and with one hand alone. In essence you have a handy cold compress to take care of your bruises and nicks and cuts.
Designers: Yi-Fei Lee, Li-Cheng Zheng, Lu-Yao Xiong & Wen-Qi Cao