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Science

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Yulia Gagarina, chemist-technologist, developer of organic cosmetics OrganicLife (Ukraine)

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<h2>Classify it</h2>

In principle, this story can be very short, consisting of a table. From the 29 sun protection filters allowed in the EU, several groups can be conditionally formed on a scale from &quot;GOOD-cool and modern&quot; to &quot;NO-GOOD-outdated and even harmful&quot;. A separate line can be called those that can be called a sunscreen filter very conditionally.

<h2>We measure by length</h2>

Previously, the criterion for the &quot;goodness&quot; of a sunscreen was its ability to protect against burns. For this, it is enough to have UVB-filters with a long wave of 290-320 nm and the inscription on the label SPF 30 or higher.&nbsp;

In the solarium, the main rays that affect our skin are the UVA spectrum with a wavelength of 320-400 nm. They are called &quot;gentle killers&quot;, because they are with us all year round (UVB &ndash; only in warm weather); do not leave burns and redness, but destroy at deep levels; provoke the appearance of free radicals and the destruction of DNA. They are the main cause of skin photoaging and the appearance of pigment spots; an increase in the risk of oncology has already been mentioned.

Full version of the access article <a href="https://pro.bhub.com.ua/cosmetology/soncezahisni-zasobi-himiya-yaku-ya-lyublyu">in Ukrainian</a>

Sunscreens: The chemistry I love