Sun Protection Factor

The Sun Protection Factor (SPF) is a numerical rating displayed on sunscreen containers. For all normal purposes, SPF15 will provide a reasonable measure of protection from burning by the sun and from harmful ultra violet radiation from sunlight.

If it takes ten minutes for you to begin to feel your skin reddening slightly, then with a good SPF 15 coating, you will be able to stand 150 minutes. However, be warned, sweating, swimming, towelling etc. can all weaken the coating and leave you open to skin damage. To enjoy adequate protection you must make sure that sun cream is applied evenly and liberally to all exposed parts of the body.

SPF 15 is generally considered to be adequate for temperate zones however a higher protection factor such as SPF 30 gives better protection in zones where the sun is stronger. Sun cream is not only for summer use. Bright sunlight reflects off snow in winter, a good sun protection cream should be used in these conditions.