Coconut oil is a natural fat that melts around 24°C (76°F). It will be liquid in warm environments and solidify into a soft, white paste or solid mass in cooler rooms. This change is purely physical and reversible; it does not indicate spoilage, reduced effectiveness, or a change in composition. The quality remains stable. To store it, keep the bottle in a cool, dark place away from direct sunlight and heat sources like radiators. If you prefer a softer, more spreadable texture for easier application, you can place the closed bottle in a bowl of warm (not hot) water for a few minutes or hold it in your hands. Do not microwave it, as uneven heating can degrade the oil. A stable, moderately cool storage temperature will help minimize these texture fluctuations. If the oil develops an off smell or changes color significantly, it may be past its prime, but the normal melting and solidifying cycle is harmless and expected.