Okay, so I finally got my hands on these M.A.K epoxy resin dyes, and let me tell you—they're like bottled rainbow magic! The set comes with 27 colors (though my fluorescent yellow arrived rock-solid...sad face). But the rest? Chef's kiss!

The pigment concentration is insane—just a few drops go a LONG way. I mixed some into clear coat for my motorcycle project (yes, I’m that 65-year-old rebel), and the colors POPPED like neon signs in Vegas. The metallic flakes underneath still shine through beautifully.

PRO TIP: Shake the bottles like you’re mad at them before use. Some colors take extra effort, but it’s worth it. Also, test your mix ratios—these babies can go from translucent to opaque real quick.

Minor gripes: A couple bottles were underfilled (looking at you, thumbnail-width gap!), and UV resin folks—this won’t work for you. But for epoxy? Absolute game-changer. My resin jewelry now looks like it costs $100 instead of $5.

Final verdict: Would I buy again? Heck yes. Just hoping my next fluorescent yellow isn’t a fossil.