Over heating(179°F+) would cause permanent damage to this thermochromic powder, so please using it under the right temperature. The temperature changing range makes it perfect for changing color when touched. This thermochromic powder is ultra-fine with vibrant colors, meaning it's great for mixing and disolving into a variety of media, including paint, glue, nail polish, slime, etc. For solvent/water based ink/paint: 3~30% w/w(25%); for plastics injection/extrusion: 0.2%~1% w/w(0.5%)
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