In my experience selecting fluorescent paint for global B2B clients, rework is often not simply due to "insufficient brightness," but rather because of flawed scenario assumptions: music festivals prioritize instantaneous brightness and on-screen consistency under UV excitation; corporate team building requires a balance of playability, sweat and abrasion resistance, and batch stability; while children's parties prioritize gentleness, easy cleaning, and low residue. This article uses real project reviews as a framework to break down the differentiated indicators of brightness, durability, and ease of cleaning for fluorescent pigments across various industries, and provides a reusable evaluation framework: lighting environment simulation (including UV bands and illuminance conditions), sweat and water resistance tests, and key points for batch color consistency control. It also includes tool suggestions (color chart comparison software, customer feedback templates, and test record forms) to help procurement teams establish standardized decision-making processes based on the principles of "skin-friendly, gentle, and effective," reducing trial-and-error and on-site risks.