Tanning: The Official Warnings
This page used to suggest how long to tan. It no longer does, and no page on SunStoke will: there is no tanning time we can call safe. Here is what the health agencies say, in their own words.
What they say
- “An IARC Working Group has classified UV-emitting tanning devices as “carcinogenic to humans” (Group 1).” IARC (WHO), Sunbeds and UV Radiation (July 29, 2009)
- “Avoid use of artificial tanning devices. Sunbed use increases the risk of developing skin cancers. Artificial tanning should never be considered as an option to achieve sufficient vitamin D status.” WHO, Ultraviolet radiation (fact sheet)
- “There is no such thing as a safe tan.” and “Evidence suggests that tanning greatly increases your risk of developing skin cancer.” FDA, The Risks of Tanning
- “The United States Department of Health and Human Services and the World Health Organization's International Agency of Research on Cancer panel have declared ultraviolet radiation from the sun and artificial sources, such as tanning beds and sun lamps, to be a known carcinogen (cancer-causing substance).” American Academy of Dermatology, Indoor tanning
- On timed tanning in the sun, WHO’s guide to the UV index: “Hence, relating UVI values to “time to burn” or “safe tanning time” sends out the wrong message to the public.” WHO, Global solar UV index: a practical guide (2002)
If you are going to be in the sun anyway
WHO: “Sun protection is best achieved by seeking shade and wearing clothes rather than applying sunscreens.” Check the UV Index Category Checkerfor the day’s category and the actions that go with it, and the Sunscreen Amount Calculator for how much one full coat takes.
Why the change: the old estimator was retired on October 6, 2026. It is kept at this address so old links land here, and it is not listed among our tools. Questions about your own skin belong with a doctor or dermatologist.