First off, let me say that the glow intensity of these powders is seriously impressive. I charged them under regular light for about 30 minutes, and they lit up my resin projects like tiny neon signs. The glow lasts a good while too - perfect for creating eye-catching nightlights or party decorations.

The variety of colors is great during daylight hours. I especially love mixing the gold foil flakes into resin pieces - it adds such a luxurious touch. However, here's where things get tricky: the actual glow colors don't always match what you see in product photos or even the powder colors themselves.

Through my testing, I found that many colors end up glowing similar shades despite looking different in daylight. For instance, both red and pink powders gave me orange glows rather than their advertised colors. This was disappointing when I tried to create specific color-themed projects.

The texture varies by color too. Some mix smoothly into resin, while others (especially blues) tend to clump and require vigorous stirring. It's not mica powder as advertised - more like very fine sand in consistency.

Despite these issues, the glow performance is undeniably strong. Just be aware you're really getting about 4 distinct glow colors rather than 12. For general glowing effects where exact color matching isn't crucial, this set works well and offers good value for the quantity provided.