How will human skin, covered with SPF 30 suntan lotion, react to solar radiation compared to skin not covered with

Question: How will human skin, covered with SPF 30 suntan lotion, react to solar radiation compared to skin not covered with suntan lotion?"
- Keywords:
  skin,
  solar radiation,
  sun-block,
  suntan
Asked by bernielovesniallhoranmillions to Hitesh, Hywel, Mae, Nik, Tiffany on 14 Jun 2012.
- Tiffany Taylor answered on 14 Jun 2012:
  
  Sun cream works by either absorbing or reflecting the suns harmful UV rays. UV rays can be harmful because they can damage your cells, increasing your risk of burning and skin cancer. SPF stands for sun protection factor, so what SPF 30 means is that your skin is 30 times more protected against the harmful sun rays which cause sun burn compared to if you wore no sun cream.
  
  So to answer your question, you skin burn about 30 times quicker in the sun if you were without SPF 30 sun cream, compared to if you wore it. So slap it on!

Question: How will human skin, covered with SPF 30 suntan lotion, react to solar radiation compared to skin not covered with suntan lotion?"