Thursday May 12th, 2016

How the sun sees us

Now the heat has arrived, there is no doubt that our skin is being exposed to the sun and we have to take precautions. Because, even if we do not see it, sun screen protects our skin more than we think and it is very important to take it seriously.

The amount and the type of solar radiation that our skin receives varies depending on a number of factors, such as:

  • The time of the day: the maximum is between 12.00 pm and 4.00 pm, so you should avoid exposing your skin to the sun during these hours.
  • The season of the year: the maximum is in July.
  • The altitude: UV radiation increases 4% for every 300 m of altitude.
  • The presence of clouds: lessens the sensation of heat, but ultraviolet radiation still has an effect.
  • The reverberation (or reflected radiation): different ground types reflect the ultraviolet rays in different measures depending if it is:
  1. Snow (50 to 90%).
  2. Sand (15 to 25%).
  3. Water (10 to 20%). Not forgetting that water also lets through 90% of UV rays.
  4. Grass (0.5 to 4%).

RECOMMENDATIONS:

  • Use suitable sun protection.
  • Apply generous sun protection on dry skin before leaving the house 30 min. before sun exposure. Also protect your lips.
  • Exposure to the sun should be progressive. You should take extra precautions with children.
  • It is important to dry yourself well after leaving the water. The water droplets act as magnifying glasses for the sun. You should dry yourself properly and re-apply sun protection.
  • It is necessary to remain hydrated, especially for children and the elderly.
  • Use sun glasses. Sun glasses must have 100% protection against ultraviolet radiation and against visible blue light.
  • Protect your head from solar rays to avoid heatstroke. This is especially important for children and the elderly.
  • Be careful when performing physical activities. On days when heat is “oppressive”, avoid sporting activities that require significant physical exertion, above all during the hottest hours of the day. Protect your head from the sun, refresh yourself and drink liquids often.