What does SPF 50 mean?
SPF 50 stands for Sun Protection Factor 50. It indicates how much longer you can theoretically expose yourself to the sun with sunscreen before getting a sunburn, compared to unprotected skin.
The key facts at a glance:
- The formula: Your skin's own self-protection time (time until the first signs of redness) is multiplied by a factor of 50. With 10 minutes of self-protection time, that would mathematically result in 500 minutes of protection.
- UVB protection: SPF 50 blocks about 98% of UVB rays. For comparison: SPF 30 filters approx. 97%, SPF 15 about 93%.
- Important note: The protection primarily applies to UVB rays. For all-around protection against skin aging, also look for the UVA seal.
- Reapplying correctly: Reapplying does not extend the protection time, but merely maintains it (e.g., after sweating or swimming).
Pro tip: In everyday life, it is better to use a higher SPF than to use too little cream, as most people apply only a fraction of the required amount and thus do not even reach the stated protection factor.
Can you still get a tan with SPF 50?
Yes, absolutely. While sunscreen with SPF 50 blocks around 98% of UVB rays, it does not block 100%. The remaining 2% is sufficient to stimulate your skin's melanin production.
Here are the benefits of tanning with a high sun protection factor:
- Longer-lasting results: Since the skin is not damaged or burned due to the high level of protection, it peels much more slowly. Your tan will therefore last longer.
- Even results: Tanning occurs gradually and without redness, resulting in a more attractive skin tone.
- Healthier glow: You avoid cell damage and premature skin aging (wrinkles) while your skin still achieves a golden complexion.
Conclusion: You will tan a bit more slowly, but more healthily, evenly, and sustainably.
How often do you need to apply SPF 50?
To maintain the full protection of SPF 50, you should reapply it approximately every two hours. If you sweat a lot, go swimming, or towel yourself off, immediate reapplication is essential, as the protective film can be mechanically removed by friction.
Keep the following in mind when applying:
- The rule of thumb: Reapplying does not extend the maximum time you can spend in the sun – it merely maintains the existing protection.
- Morning routine: Apply your sunscreen, such as the one from v-sun, about 20 to 30 minutes before sun exposure so that it can absorb well and reach its full effectiveness.
- Comfortable skin feel: A common reason for not reapplying often enough is a sticky feeling. v-sun textures are formulated to absorb quickly and feel light, which makes regular refreshing throughout the day much easier.
A tip for effectiveness: Be careful not to skimp. To truly achieve the SPF 50 rating, an adult needs about the amount of three tablespoons for their body. Thanks to v-sun's modern formulations, this generous application is possible without annoying white residue or a heavy skin feel.
How long can you stay in the sun with SPF 50?
The time you can spend protected in the sun is calculated by multiplying your skin's own self-protection time by the sun protection factor (SPF). If, for example, your skin starts to show redness after 10 minutes without protection, SPF 50 theoretically allows you a time of up to 500 minutes (approx. 8 hours).
You should keep three things in mind here:
- The 60% rule: Experts recommend using only about 60% of the calculated time to stay on the safe side. In our example, that would be about 5 hours.
- No extension: Even if you apply products like those from v-sun multiple times, this does not extend the total protection period for the day. It merely refreshes the existing protection that has been worn away by sweating or water.
- Skin type is decisive: Very fair skin types have a significantly shorter self-protection time. This is where reliable sun protection from v-sun shows its full strength, allowing you to enjoy your time outdoors carefree.
Once the maximum time has elapsed, the only option is to retreat into the shade to allow the skin to regenerate.
