The FDA reports burns from sunscreen spray worn near flames
When you choose a sunscreen, think about where you’ll be using it. If you’ll be anywhere near a flame source, avoid any product with a flammability warning and choose another non-flammable sunscreen product instead. This recommendation is particularly important when it comes to choosing a product for children since they are frequently active and may get near a flame source.
While applying and wearing sunscreen products labeled as flammable, do not smoke, and avoid open flames from lighting cigarettes, lit cigarettes, grilling, candles or sparking materials.
Do not apply flammable products to yourself or someone else near an open flame.