There is no safe or healthy way to get a tan from sunlight, new guidance from the National Institute for Health and Care Excellence (NICE) has warned.
The health watchdog's latest guidance also says an existing tan provides little protection against sun exposure.
It recommends using at least factor 15 sun cream, with adults urged to use 6-8 teaspoons (35ml) per application.
Benefits from building up vitamin D from the sun have to be balanced with the risks of skin cancer, it adds.
Many adults in Britain have low levels of vitamin D and the guidance states that some exposure to sunlight can help to build this up.
NICE also says it is not possible to get enough vitamin D by sitting next to a closed sunny window, or from sunlight between October and March in the UK.
However, experts stopped short of recommending a specific amount of time people should stay out
http://www.bbc.co.uk/news/uk-35529596