Why Makeup Breaks Down in Heat

Heat increases skin temperature, which softens makeup binders and accelerates oil movement. As the base film weakens, pigment shifts and coverage breaks apart, especially in high-movement areas.

Applying thicker layers in heat worsens breakdown by trapping warmth and oil. The solution is thinner application and allowing each layer to set before adding more.

Longwear performance in heat comes from stable films, controlled oil, and minimal product weight — not heavier makeup.