The sun is important for our immune system, for the formation of vitamin D and not least for our mind. No wonder that summer lures people outside. However, many errors are circulating about the correct handling of sun and sun protection. Sun protection is important - that has meanwhile gotten around. But not all the wisdom that circulates is true. Here is a list to clear up with common mistakes.
1. After creaming extends the protection time
Not correct! The effect of sunscreen only lasts for a certain amount of time. That is, by repeated creaming - useful especially after bathing - you can renew the protection, but not extend. Wrong is also the opinion that with tanned skin no sun protection is necessary. The tan only provides some protection against the aggressive UV radiation. Even tanned skin is therefore damaged by intense radiation - only the consequences later, for example in the form of premature aging and age spots, visible.
By the way: If both sunscreen and mosquito repellent is required, then always first apply the sunscreen and the (liquid) mosquito repellent over it.
2. In the shade, you do not get sunburned
Not correct! The widespread opinion that you do not have to cream yourself in the shade is also wrong. Up to 85 percent of the radiation intensity is reflected by sand, water or buildings. And umbrellas or clouds do not completely stop the sun's rays. Incidentally, that's why sensitive people get sunburned, even if they're under the umbrella all day on the beach. Therefore, even those who do not go in the direct sun, must be creamed.
The good news: You can also turn brown in the shade - slower, but gentler and more even! And another tip: During lunch time with the particularly intense sunlight best not to stay outdoors.
3. You are safe in the water
That's not true! The opposite is true - water is even more dangerous because the surface of the water reflects the rays. This can intensify the harmful effect of the rays on the parts of the body that look out of the water.
Even under water, you are not safe from the sun - half a meter below the water surface, up to 60 percent of the UVB and even 85 percent of the UVA rays arrive. In addition, wet skin burns faster than dry. Especially treacherous: Since the skin is cooled while swimming, you often notice the sun only when the back is already reddened. Therefore, it is advisable to use a waterproof sunscreen for swimming.
Waterproof products hold better and better protect the skin from chlorine or sea water - but here too the sunscreen must be regularly renewed by repeated creaming. For children, splashing in the water may even require a special swimwear with UV protection.
4. Clothing protects against sun
No! Certain UV rays also penetrate through textiles. In particular, tight and light shirts or a wet fabric let the rays through. So the skin z. B. under a bright bikini made of thin material damage. Sunscreen products should therefore be applied under the bikini or swimsuit half an hour before sunbathing.
Tip: Detergents with sunscreen are available on the market, which - after repeated washing - make the clothing more opaque to the sun. It is also helpful, for protection, to wear loose and rather dark clothes. Special sun protection clothing with a sun protection factor of 20 to 40 is also available on the market, which is impregnated with sunscreen substances. And do not forget: the head protection and the sunglasses!
5. Sunblockers provide protection throughout the day
That's not true! The name is deceptive: A sunblock can not block the sun endlessly, but is characterized by a particularly high sun protection factor (30 or more). The danger here: Many people feel so safe and forget to renew the sunscreen at regular intervals and, above all, apply evenly.
6. Dangerous is just a sunburn
Incorrect! Responsible for a sunburn are the high-energy UV-B rays. The long-wave UV-A rays, on the other hand, are responsible for the tanning of the skin, but also for skin aging and increased skin cancer risk. Even without sunburn, therefore, the UV radiation can cause damage to the skin: the longer one exposes to the radiation, the higher the risk of permanent damage. Too much sun and heat can also lead to a sunstroke, which manifests itself through circulatory problems and nausea.
7. Sunscreen with high SPF prevents tan
That's not true! Many people believe that sunscreens with high sun protection factor (SPF) prevent browning - and instead use products with too low factors. But even with a strong sunscreen you will be brown, and gentler yet. A high sun protection factor protects against sunburn and helps to keep the tan longer.
8. Sun allergies come from greasy creams
True, but only partially! Sun allergies have very different causes: medicines, fragrances, chlorine or salt water, but also hereditary predisposition can lead to allergic reactions to the UV-A rays in sunlight in sensitive people. Oil-based sunscreens can trigger a sun allergy and lead to the so-called Mallorca acne (or acne aestivalis professionally). Sun allergies can be caused by a fatty sunscreen, but not necessarily.
Particularly problematic are sunscreen products in creams and emulsions, since they contain emulsifiers that promote an allergic reaction. For a Mallorca acne, a sun gel with a high UV-A light protection, which is fat and emulsifier-free, therefore helps. Attention: also with skin care and After Sun products make sure that they do not contain emulsifiers. They can adhere to the skin for more than 24 hours and, in combination with UV radiation, can later lead to intolerance reactions.
9. Self-tanner protect the skin
No! The tan from the tube offers no protection from the sun's rays, because self-tanner have only a cosmetic effect. They combine with components of the human epidermis in the so-called horny layer and color the skin surface brown - the ability of the skin to protect itself from the sun does not change anything.