(Caracas, 19 August, Europa Press) –The sun protection industry only started in the Second World War, when the belligerent governments they needed skin creams to protect their troops stationed in the Pacific and other places of extreme weather, according to the Spanish Academy of Dermatology and Venerology (AEDV).
For example, the first sunscreen in history, derived from oil, was the so-called "red paraffin oil", which the US Air Force distributed to its airmen, waiting for them to be shot down in tropical areas.
Today we have different products that protect us from the sun and can be classified as filters, protectors and bleaching agentsdepending on the substances they contain. The AEDV recommends using a protector on whose label it is determined that the & # 39; broad spectrum & # 39; is, that is, it filters out both UVA and UVB rays.
In addition, the value of the sun protection factor (SPF) must appear on the main surface of the container. The protection of the screens can be classified from the minimum, if the SPF is between 2 and 11; up to the maximum, with an SPF of 50+. On the other hand, depending on the type of skin, the texture must be chosen (gel, hydroalcoholic, cream, oils, foam, among others).
As data, the AEDV requires that a cream with an SPF 30 factor can absorb more than 92% of the UVB radiation, and another with a factor of 50 can protect 97%. "Sunscreens with a larger afctor offer protection for a long time, but watch out for those who specify an SPF of more than 50, because the real difference in protection is usually insignificant," he says.
Here it is emphasized that the protector must be applied to the sun on all exposed parts of the skin, even on the edge of the ears, on the lips, on the back of the neck and on the feet, areas that always have a tendency to to remain unprotected.
It is advisable for the AEDV that all people use sunscreen, regardless of the type of skinbecause all types of protection against UV rays need.
So with everything from the Spanish Academy of Dermatology and Venerology (AEDV), it is necessary to obtain an optimal result of the use of a photoprotector to follow 4 basic rules:
1.- Place the photo protector at home, never on the beach or in the swimming pool.
2.- Always do it on dry skin.
3.- Apply it for 30 minutes before exposing yourself to the sun.
4.- Do not skimp when it comes to cream.
He also says that by respecting these rules, it is also necessary:
.- Avoid spraying water during exposure to the sun.
.- Avoid perfumes and alcoholic colonies that contain plant essences because they are photosensitizing.
.- Elergir the most appropriate photoprotector, taking into account the phototype.
.- Use the protective cream even if the air is cloudy.
.- Do not expose yourself to the sun between 11 and 15 hours.
.- Use sunscreen from the six months of the baby's life.
When reusing the SPF cream last year, the AEDV indicates that the shelf life of the product is reflected in the packaging. "If we have not opened it, the expiration date will appear, to know when to throw it away once it has been opened, we have to open the shape of a jar with the lid in the container and view the number what's in it?
In general, it expires after nine months, it must always be properly closed and kept in a dry place without exposure to the sun. Anyway, if we see that the color appearance changes or has an unpleasant odor, we should not use it, "he says.
On the other hand, it clarifies that the products can resist if we stay in the water for a while, but if we rub the towel, 80% of the cream is eliminated, something that also happens when the immersion time is very long. "The products are water resistant & # 39; (water-resistant) if they retain 70% of the photoprotection 40 minutes after the dive (two 20-minute baths); and # 39; waterproof & # 39; (very resistant to water), if the file is after four baths of 20 minutes each. In any case, it is advisable to re-apply the cream after a bath of more than 20 minutes, "he says.
He points out that on the very cloudy days of winter a lower protection factor can be used, but you have to be careful with cloudy days in the summer because many UV rays can leak. "The clouds that protect most are low and thick clouds," he warns.