UV filters – protection against UV radiation and skin damage

UV filters are essential components in sunscreens. They protect the skin from harmful ultraviolet radiation (UV-A and UV-B), which can cause sunburn, skin aging, and, in the long term, even skin cancer. UV filters absorb, reflect, or scatter UV radiation and are therefore the most important protective mechanism in skincare products.

What are UV filters?

UV filters are substances used in sunscreens to protect the skin from the harmful effects of UV radiation. There are two main types of UV filters:

• Physical (mineral) filters: These filters, such as zinc oxide or titanium dioxide, form a protective barrier on the skin that reflects or scatters UV rays. They are effective immediately after application and are particularly suitable for sensitive skin ( BVL – Sunscreens: UV filters in cosmetics ).
• Chemical (organic) filters: These filters absorb UV rays and convert them into heat, so they have no harmful effects on the skin. They are often found in liquid formulations and are quickly absorbed ( AOK – UVA and UVB rays: differences ).

Why are UV filters important?

UV radiation can penetrate deep into the skin and cause cell damage. This not only promotes sunburn but also premature skin aging (photoaging) and increases the risk of skin cancer. Using sunscreens with UV filters protects the skin from these harmful effects. UV-A rays primarily promote skin aging, while UV-B rays are responsible for sunburn ( BFS – UV protection through sunscreens ).

How do UV filters work?

UV filters offer **double protection** against UV rays:

• **Absorption:** Chemical filters absorb the rays and prevent them from penetrating deep into the skin. They convert the UV radiation into heat, thus preventing damage ( BFS – sun protection through sunscreen ).
• **Reflection/Scattering:** Physical filters reflect UV rays and protect the skin immediately, without them first needing to be absorbed. This protective mechanism is particularly stable and durable, making it ideal for sensitive skin ( Öko-Test – Protective Mechanisms of UV Filters ).

Types of UV filters and selection

• Physical filters: Zinc oxide and titanium dioxide – ideal for sensitive skin types or skin conditions such as rosacea, as they do not penetrate the skin but only protect it.
• Chemical filters: Avobenzone, Octinoxate – offer highly effective protection, are quickly absorbed and are particularly suitable for normal skin types.

Tips for use

1. Apply enough: Apply a sufficient amount of sunscreen – about a teaspoonful for the face and about a handful for the whole body.
2. Reapply regularly: Renew sunscreen after approximately two hours and after swimming or heavy sweating.
3. Use all year round: UV rays are active all year round – even on cloudy days or in winter, sun protection is important ( BFR – UV protection through sunscreen ).

In combination with NATURFACTOR® care

Using a UV filter is essential in any skincare routine. Complement your routine with Porcelain Skin Serum to hydrate your skin, and then apply sunscreen to protect it from harmful UV rays.

Conclusion

UV filters are essential for effective sun protection. Whether physical or chemical filters – both have their advantages. By choosing the right sunscreen and using it regularly, the skin stays healthy, premature aging is prevented, and the risk of skin cancer is reduced.

Sources

1. BFS – UV protection through sunscreen
2. AOK – UVA and UVB rays: Differences
3. BFS – Sun protection through sunscreen
4. Eco-Test – Protective mechanisms through UV filters
5. BFR – UV protection through sunscreen

Tags: UV filter, sun protection, UVB, UVA, sun protection factor, skin protection