How long should I leave a spray tan on to achieve the most optimal results? Is there a specific duration recommended by professionals, or does it vary depending on the formulation used? Furthermore, what factors should I consider when determining the ideal time for my unique skin type and desired shade? Although many might suggest a general timeframe, could individual variations in skin texture and pH levels necessitate a personalized approach? If I were to leave it on for an extended period, would that lead to a more pronounced color, or could it risk an unnatural appearance? Additionally, how does the ambient temperature and humidity level impact the efficacy of the bronzing solution? Should I also be mindful of any pre-application preparations or post-application care that could influence the longevity and vibrancy of the tan? Ultimately, what is the consensus among tanning experts regarding the perfect duration for an impressive, sun-kissed glow?