comments:
I just wrote up our washable blood recipe, but your costume is partly dark blue, the walls are black, and blood recipes are not opaque. They’ll just look dark on black. Honestly? I’d try washable kids’ acrylic paint. You can get 32oz bottles of it. That shit is literally made to come out of clothes, and it will even come out of white. (The red kind is in our washable blood recipe, and we’ve used that on white lab coats every year for…like, 10 years, lol. TEST FIRST. All fabrics react differently.) If you’re super worried, mix it with a few squirts of dish detergent. Rinse off all the paint with COLD water before washing (warm/hot water makes dyes stain harder). Do not put a mixture containing dish detergent into the washer; you will get a giant soapy bubbly mess. If you need the color to be brighter…you can add food coloring, but then you have to be VERY vigilant about laundering lighter items quickly; food coloring will stain. Def mix in detergent if you’re using food coloring. Two other things you can add for thickening & color are colored flocking or beet powder. Flocking powder just rinses off no problem. Beet powder you have to rinse, then soak in cold water & laundry detergent for about 10 min before washing. Flocking comes in lots of colors. Be really careful not to breathe it in. Beet powder is a dark, very pinkish magenta-y red that could really amp up the punch of a pinkish hue. But I’d start with washable acrylic paint, then experiment if it’s not quite right. Crayola sells it, but I expect lots of other brands do, too. https://www.amazon.com/Crayola-Washable-Paint-Magenta-oz/dp/B00021TNYQ