Developing New Anti-Yellowing Agents for Enhanced Stability in Polyurethane Bra Materials Introduction: The Invisible Enemy – Yellowing in Polyurethane Imagine slipping into your favorite bra, only to notice a faint yellowish tint creeping across the straps and underband. It’s not just unsightly—it’s unsettling. What causes this discoloration? And more importantly, can it be stopped? Polyurethane...