SUN / UV PROTECTION

Sun Protection & Skin Care – for a Good Skin Feeling in Any Weather

Our skin needs daily protection – especially when exposed to the sun. UV rays can irritate the skin, accelerate aging, and cause long-term damage. Good sun protection is therefore an important part of daily care.
This way, your skin stays healthy, well cared for, and simply feels good – day after day.

Our tips for daily application

Apply in the morning: Sun protection is part of your morning routine – ideally after your facial or body care.
Use enough: A generous amount ensures optimal protection.
Reapply regularly: Especially after swimming, sweating, or drying off.
Use even on cloudy days: UV rays are effective even without direct sunlight.
Protect sensitive skin: Products with high UVA/UVB protection and good tolerability are ideal.

EXPERTS EXPLAIN

METHOD: SUN PROTECTION

The determination of a product’s sun protection factor (SPF) is carried out through a comparative assessment of differently treated areas on the back. For this purpose, the backs of the study participants are exposed to a series of UV doses generated using a solar simulator. Three skin areas are tested – one area is treated with the test product, a second area remains untreated, and a third area is treated with a standard product as a reference.
The doses that each produce the first visible redness are compared, and this ratio determines the individual sun protection factor. An average value is calculated from at least 10 study participants. This is an internationally standardized method.

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In addition, since the end of 2024, there are two new internationally recognized methods that do not require UV irradiation of study participants. One measures the transmission of products on roughened plexiglas plates (PMMA) before and after UV exposure (in vitro). Another method is measured on study participants (in vivo). Here, UV protection is assessed using reflection spectrometry, meaning it measures how much UV light is reflected back from the skin. The skin is exposed to a negligible UV dose. All three recognized methods for determining the sun protection factor have their individual advantages.

Balanced sun protection includes protection against short-wave UVB rays, which are mainly responsible for sunburn, as well as sufficient protection against long-wave UVA rays, which significantly contribute to skin aging and also to sunburn. A sunscreen product must demonstrate not only its SPF but also that it provides adequate UVA protection. Until now, this had to be proven in an additional in vivo or in vitro study. The two new methods cover this additional measurement.