UV light is one of the factors of skin aging. In fact, it does not matter whether the day is sunny, rainy, cloudy or the temperatures are below zero. On each of these days, ultraviolet rays (invisible to the naked eye) regularly damage DNA and interfere with cell function. Therefore, it is worth applying a sunscreen, especially when we sunbathe, engage in outdoor activities or travel long hours by car – remember that UVA rays penetrate the glass!
It doesn’t matter too much whether we apply a sunscreen with a spf 30 or spf 50, because the higher option protects the skin by 98%, while the lower option protects at 97%, compared to spf100 which protects at 99%.
Is it beneficial then, for just 1-2% more protection, to use a product with a greasy or chalky effect on the skin and possibly have a problem with applying make-up? I think everyone has to answer this question themselves. The same with what protection formula we choose – mineral or chemical – both protect the skin from UV radiation, but they work in different ways. The mineral option is considered to be more skin-friendly, especially if we are dealing with sensitive skin, because the filter is deposited on the surface of the skin and reflects ultraviolet radiation, whilst the chemical alternative melts into the skin, absorbs radiation and converts it into thermal energy (heat). The mineral often contains ‘zinc oxide’ and ‘titanium dioxide’, whilst the chemical SPF often remains completely invisible on the skin.
Some manufacturers also mix mineral and chemical filters together
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