: Add a small amount of Cornstarch to make the liquid less translucent. 2. Washable Costume Blood
For a magic-like effect where a "cut" appears instantly on the skin: BloodHD
: When the knife touches the skin, a chemical reaction creates Iron(III) Thiocyanate , which is a deep, blood-red color. : Add a small amount of Cornstarch to
: Mix Clear Dish Soap (like blue Dawn) with Corn Syrup and Red Food Coloring . a chemical reaction creates Iron(III) Thiocyanate