How long can I spend in the sun before being affected? Why does this vary?

How long can I spend in the sun before being affected? Why does this vary?

Any sun light exposure will add to a person's life time cumulative UV radiation exposure and so increase the risk of developing a SCC. Because complete sun avoidance is impractical, the best next thing to do is always undertake strict sun protective measures. These include avoiding midday sun, wearing UV protected clothing and hat and using broad spectrum sunscreens.