Although the tan is still a symbol of health - but fortunately more and more people are aware of the fact that exposure to the sun have to be careful. It also means the use of sunscreen UVA and UVB rays. Here, however, there are problems.
What are UVA and UVB - and why you should microfilter protect yourself? UVB rays - the ones that feel summer microfilter skin. Heat it, attacking and drying the skin, sometimes causing inflammation. They are responsible for sunburn. Worse, however, damage the skin and cause changes in the structure of DNA, which can lead to cancer. UVA rays - we do not feel them practically, but we see the effects of their actions. They are responsible for premature skin aging and wrinkles. Because they reach the skin, subcutaneous tissue, irreversibly damaging the collagen and elastin fibers, and changing the structure of DNA tissue.
The most common sign seen on the packaging sunblock is SPF - Sun Protection Factor. His counterpart are also symbols: LSF (German), IP (French), FP, SF, BF, or just UVB.
You must add here that most of the available resources to protect against UVB, not having or having poorly UVA. Before buying, microfilter so read the label carefully - and choose the cream that will protect your skin in the full band.
In fact, this can not be accurately determined, and various sources give slightly differing from each other data. Most often, microfilter however, it is assumed that it is: SPF 2 - 25 - 30% of the radiation SPF 4 - approx. Radiation 50% SPF 10 - approx. Radiation microfilter 85% SPF 15 - here. different sources of 93 - 96% of the radiation microfilter SPF 25 - approx. 96% of the radiation SPF 30-50 - approx. 98% of the radiation SPF 60 - by. various sources of 98.5 - 99.5% of the radiation
As you can see, the differences between the higher factors of are not very significant. microfilter This is very important, often because people buying factor of 60 think that they are protected by more than twice the SPF 30 - and spend in the sun a lot more time. The above table shows that this protection is that, unfortunately, only a little more effective.
Indicator of protection against UVA is IPD or PPD - but beware! there is no generally accepted scale, so the value on the package one manufacturer does not necessarily correspond to the same index on a different product! Should be guided by the principle of simply microfilter "the higher, the better."
The general rule is that they have a lighter complexion, and they strongly react to the sun (the time after which the burn) - the higher the filter we use. Phototype 1: red hair, pale complexion, light tan and red, frequent burns Phototype 2: light blond hair, light complexion, light tan and red, quite frequent burns Phototype microfilter 3A: golden blond hair, light complexion, light brown tan, occasional burns Phototype 3B: hair light brown, complexion olive, tan gold, rare burns Phototype 4: dark brown hair, dark complexion, dark tan, no sunburn Phototype 5: black hair, complexion very dark, very dark tan, no sunburn
How to apply filters depending on the phototype? phototype 1 and 2 - the above filter 10, phototype 3A, 3B? filter 8 to 4 (four in the third week lotion), phototype 4 and 5 - the filters microfilter can stop at number 4 or 3.
Also always at the beginning of the summer, when the first rays of the sun stronger, you need to choose a higher protection. Let us remember that even the highest filter does not give us complete safety, so soak a few hours in the sun is never a good idea.
Hey, I recommend to use the best filters and save them. In my opinion the best out of the filter is the one with P20. I buy it at a pharmacy. It is perfect even in harsh conditions, this remains 10h, leaves no oily and white layer and well protected.
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