This book was written to give a clear, science-based understanding of tanning and sun exposure, separating myth from measurable fact. It’s meant to help you enjoy sunlight responsibly and with awareness, appreciating its benefits without crossing into harm.
It is sponsored by Sola: UV Index and Sun Exposure, an iOS app that offers a comprehensive calculation of the solar UV radiation dose based on the real-time UV index schedule, Minimal Erythema Dose (the pre-sunburn threshold for skin exposure to UV radiation), Fitzpatrick skin type, existing tan level, prior sun exposure during the day, planned exposure duration, the SPF of sunscreen (if applied), and whether you regularly alternate sides while sunbathing.
Together, this book and the app share a simple goal: to help you enjoy the sun intelligently, appreciating its benefits while respecting its boundaries.