The 'up to 90 days' claim for the Cocorrína Clean Linen reed diffuser is an estimate based on standard room conditions, typically around 20-22°C with minimal direct airflow. In environments with temperatures exceeding 25°C or consistent drafts (e.g., near HVAC vents or open windows), the key oil blend's evaporation rate can increase by 15-25%. Conversely, cooler, stiller air (below 18°C) may extend diffusion time, but potentially at a reduced scent intensity. For optimal longevity, placement in a stable climate zone with moderate ventilation is recommended.

The 8 pure cotton sticks provided with the Cocorrína diffuser act as wicks, controlling scent diffusion rate. Using all 8 sticks typically maximizes scent release, suitable for larger rooms or those desiring a more prominent aroma. Reducing the number of sticks, for instance, using only 4-5, can decrease the overall scent throw by an estimated 30-40%, creating a subtler ambiance. The density of the cotton fiber and its saturation level directly influence how quickly fragrance molecules are released into the air.

The Cocorrína diffuser uses a blend of key oils and fragrance oils. Under typical indoor conditions, such as 20°C ambient temperature and 40-60% relative humidity, the mixture's evaporation rate is primarily governed by its viscosity and the surface area exposed by the reed sticks. While specific volatile organic compound (VOC) evaporation rates are not published, a 6.7 fl oz (approximately 200ml) volume is designed to sustain diffusion for the stated duration. Higher humidity (above 70%) can slightly slow evaporation due to increased atmospheric vapor pressure.

Direct sunlight exposure can significantly alter the scent profile and oil integrity of reed diffusers. UV radiation can degrade the volatile organic compounds (VOCs) in the key oil and fragrance blend, potentially leading to a loss of top notes and an altered, sometimes 'stale' or 'off' aroma. Furthermore, increased temperatures from sunlight can accelerate evaporation by up to 30% compared to shaded conditions, reducing the diffusion lifespan. For optimal scent quality and longevity, placement away from direct sunlight and heat sources is crucial.