From a public health point of view, it is especially important to protect the most vulnerable population groups. Based on the finding that more than 90% of non-melanoma skin cancers occur in skin types I and II, the basic protective messages associated with the UV index should focus on fair-skinned people who tend to burn. Children who are particularly sensitive to UV radiation, require special protection.

Even though the incidence of skin cancer is lower in dark-skinned people, they are nevertheless susceptible to the damaging effects of UV radiation, especially to the effects on the eye and immune system.

The Sun Protection Factor (SPF) stated on sunscreens (sunburn lotions) indicates how efficient the product is. The higher the SPF, the more efficient the sunscreen. The sunscreen should not be used to prolong the time of exposure! The following table  gives an indication of the SPF values according to the different skin types and to the UV Index levels. Additionally, the eyes need to be protected by sunglasses containing UV-B and UV-A filters.

For more info, please read:

Global Solar UV Index - A Practical Guide
© World Health Organization, 2002
ISBN 92 4 159007 6
PDF file (439 kB)