Answer by HWLights92 · Aug 14, 2011 at 10:18 PM
depends on the film really. In sweeney todd they used an orange mixture close to paint. in evil dead they use corn syrup and red food coloring. jackie chan's old stunt team would mix corn syrup, cough syrup, and red food coloring. If they need a river of blood it might be red water or a type of juice. for little mouth cuts there are blood capsuls you can buy at costume stores. it's all about creativity really.