Thursday, March 14, 2019

Why should we protect our skins from sun ?

   The sun carries a lot of positive images. Yet, it is dangerous when it is abused. The UV absorbed by the skin can cause skin cancers, including melanoma. It is therefore important to protect yourself from the sun, even when one is skinned or already tanned.
    With sun, we are exposed to two types of UV rays:
  • UVA, capable of penetrating deep into the skin, is responsible for its aging;
  • UVB, the main cause of sunburn, is nearly 1,000 times more powerful than UVA rays.

  1. UV and cancers :

   Upon reaching the skin, excessive doses of UV damage the skin cells and can cause irreversible damage to exposed cell genes.
    We know today that UVA and UVB increase the risk of skin cancer, in particular:
Cutaneous carcinomas, the most common; they have the shape of a small button or a white crust. They heal well but may leave scars. They are most often related to chronic solar exposures during life;
Cutaneous melanomas, much more serious: these malignant tumors most often resemble moles but with abnormal shapes or colors, and can quickly create metastases.

       2. Prevention tips : 
Whatever your phototype, effective and adapted sun protection is essential to reduce the penetration of UV rays into the skin. However, it alone is not enough to limit the risk of skin cancer. We must combine a set of precautions:
  • Avoid exposure to the sun in the middle of the day, between noon and 4 pm during the summer, because it is the moment when the sun's rays are the most intense, and therefore the most dangerous.
  • Look for shade in all outdoor activities in the summer. At the beach, the umbrella is useful but it does not fully protect from sunlight. If you work outdoors, be careful not to leave your skin unprotected.
  • clothing protection is the one that stops the UV best. In the sun, it is important to wear clothes limiting the exposed parts of the body (T-shirt, light pants ...); a hat with rather wide edges; sunglasses with UV filter (CE, category 3 or 4)
  • Renew frequently the application of sunscreen high protection against UVB and anti-UVA: sunscreen is a complement to other precautions to protect the uncovered areas of the body. Even powerful, it does not filter all UV. It must be applied every two hours because its efficiency decreases with perspiration and bathing.
      3. Children and solar protection :
   Whatever the phototype of your child, his skin is thinner and therefore more fragile. It is not armed enough to defend itself against UV rays. In addition, excessive exposure to the sun during childhood is the leading cause of melanoma in adulthood.
   It is therefore essential to limit children's exposure to the sun:
- Avoiding the hours when the UV rays are the most intense (12h-16h );
- By regularly applying a suitable sunscreen, even if they stay in the shade;
- By having them wear a T-shirt, a hat and sunglasses that filter UV light.

Finally, children under one year should never be exposed to the sun.

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