Sunscreens fall into two types:
-physical guards
-chemical protectors.
physical Protectors
These guards are different because it is a very milky white cream, sprinkle in enough trouble and skin to absorb it completely because it is a very thick.
can be found in health food shops, pharmacies and drugstores.
physical guards act as a screen against the sun's rays as if you were to put a lien ... T-shirt, handkerchief, hat ...
physical guards reflect radiation and therefore protect the skin as possible, so you do not burn but can not acquire a minimum tan.
Chemical Protective
With these protectors will get a healthy tan as long as you use them correctly, they work as filters, converting sunlight into harmless heat, absorb solar radiation and convert it into other energy that is not harmful to the skin.
You can find them in supermarkets, perfumes and cosmetics shop in general.
Sun Protection Filter - FPS
With the issue of FPS we believe that we have everything under control because they tend to think that the greatest number of FPS more protection ... and that is true, FPS is the extent to which we rely to protect our skin from UV-B rays, but there is a second function that we overlook and that is very important ... This is the time which may be exposed to the sun depending on the FPS.
Example:
If it takes 5 minutes to burn (unprotected) with SPF 15 protection falter burn 75 minutes, after those 75 minutes, you've tanned or not, you will be exposed to burn because the FPS has uptime protection (no, not last forever) ... If after those 75 minutes you come back again to take sunscreen would have another 75 minutes of protection.
is a multiplication, all you have to know approximately how long it will burn if exposed to sunlight, and from there, you multiply the approximate time in minutes with an SPF of your sunscreen.
Anyway it is noteworthy that no chemical sunscreen we protect 100% of UV-B, if there is no alternative to sun exposure, protect and which, although not in its entirety is always better than nothing at all ... but that if it tries to escape the "sun" and directly ... certainly not without protection.
tan myth
believe that when we go to the beach we get tanned by the sun roasted us somehow, but that's not entirely true ...
The key to our bed is in melanin, so our bed is not dependent on chemical protective uses.
(melanin levels are different for each person, hence that there are people blanquita or super super dark)
melanin in our skin works with the sole purpose of protecting against the sun, is what makes our skin is browned and thus have less risk of burning. Therefore
our body is tanned but when we're on the beach, as are times when we are more exposed to the sun and therefore melanin, our skin gradually becoming acting as our exposure is increasing, and likewise when we finished our day at the beach and return to our routine, the tan is going but is actually melanin ceases to act, there is no danger in terms of sun exposure and stops working, levels of defense of melanin down and our skin color returns to the home gradually.
But not enough melanin to be fully protected from solar radiation and burns, so we always use protection.
Turning to the guards, I explain how it works melanin in each case:
with physical guards : Melanin does not act as these screen savers are full, and melanin does not start because receives no outside any "alarm."
With chemical protectors: Melanin acts as if it did not protect, and therefore begins to work becoming darker skin to prevent burns and injuries, but as these guards have filters to protect ourselves, let's say happens is you are cheating the melanin to act and so even using chemical protection, our skin can brown.
I hope it helps you, and now that the good weather did not hesitate to always use your sunscreen.
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