Using this fake blood is easy. You can squirt it directly onto the area where you want to create a gory effect, like a wound or a bite mark. If you prefer a more smeared look, just use your hands or a prop to spread it around. For a congealed effect, leave it for a while to dry. Before you start using it regularly, do a patch test on a small area of your skin. If you notice any redness or itching during the patch test, don't use the product anymore. To keep the fake blood in good condition, store it in a cool and dry place. And always make sure to clean the area where you've applied the blood thoroughly after use.