Medical sources
Medical Disclaimer
TanPro is not a medical device and does not provide medical advice. Everything the app shows — burn-time estimates, session lengths, SPF suggestions, UV guidance, and vitamin D figures — is an estimate, based on public weather forecasts and generalized skin-type models. Your skin's individual response can differ significantly.
- Tanning and UV exposure always carry risk. There is no completely safe tan. UV radiation can cause sunburn, premature skin aging, eye damage, and skin cancer, including melanoma.
- Always consult a dermatologist or physician before deliberate tanning — especially if you have fair or sensitive skin, a personal or family history of skin cancer, are taking photosensitizing medication, or have any skin condition.
- If you notice skin changes such as new or changing moles, see a doctor promptly.
- Children and adolescents should not engage in deliberate tanning.
- If in doubt, stay out of the sun and follow the guidance of local health authorities.
Scientific Sources
The app's UV guidance, session estimates, and skin-type model are based on published guidance and research from recognized health authorities and scientific literature:
- World Health Organization — Global Solar UV Index: A Practical Guide (the UV Index scale, exposure categories, and sun-protection recommendations): who.int/publications/i/item/9241590076
- Fitzpatrick TB. The validity and practicality of sun-reactive skin types I through VI. Arch Dermatol. 1988;124(6):869–871 (the skin-type classification used by the app): doi.org/10.1001/archderm.1988.01670060015008
- ISO/CIE 17166:2019 — Erythema reference action spectrum and standard erythema dose (the dose model underlying burn-time estimates): iso.org/standard/74167.html
- U.S. Food & Drug Administration — Sunscreen: How to Help Protect Your Skin from the Sun (SPF usage and application guidance): fda.gov/drugs/understanding-over-counter-medicines/sunscreen-how-help-protect-your-skin-sun
- Petersen B, Wulf HC. Application of sunscreen — theory and reality. Photodermatol Photoimmunol Photomed. 2014;30(2–3):96–101 (real-world sunscreen application, reflected in the app's conservative SPF factor): doi.org/10.1111/phpp.12099
- Holick MF. Vitamin D deficiency. N Engl J Med. 2007;357:266–281 (cutaneous vitamin D synthesis, the basis of the app's vitamin D estimates): doi.org/10.1056/NEJMra070553
These sources inform the app's general models; they do not constitute an endorsement of the app by any of these organizations, and the app's outputs remain estimates as described above.