Introduction: The Mysterious “Broken-In” Vape Phenomenon   Every experienced vaper knows it: that beloved mod or RDA that somehow produces richer, deeper flavors after months of use. This isn’t nostalgia—it’s the science of seasoned vape device development, where molecular bonding and material conditioning create the perfect “flavor highway.”   We interviewed materials scientists and veteran vapers to uncover: ✔ The 3-stage “seasoning”…