SPF 30 vs SPF 90: What's the Difference? Find Out Here!

When it comes to protecting your skin from the sun's harmful rays, sunscreen is vital. But with so many options on the market, it can be overwhelming to choose the right one. One of the key factors to consider is the SPF (Sun Protection Factor) level. But what exactly is the difference, say between SPF 30 and SPF 90?

What does SPF mean?

SPF measures the level of protection a sunscreen provides against UVB rays, which are the main cause of sunburn and skin cancer. The number indicates how long it will take for your skin to burn compared to if you weren't wearing sunscreen. For example, if you would normally burn after 10 minutes in the sun, SPF 30 would theoretically protect you for 30 times longer, or 300 minutes.

SPF 30 vs. SPF 90: What's the difference?

Most people assume SPF 30 would provide only one third the protection that SPF 90 offers against UVB rays, but that would be incorrect. SPF 30 blocks 97% of UVB rays, while SPF 90 blocks about 98.9%. This may or may not seem like a huge difference, but one of the other things to think about, is the perceived breathability, as we like to refer to it.

It's important to note that no sunscreen can provide 100% protection, so reapplying regularly and seeking shade are still essential. SPF 30 is generally recommended for everyday use, while SPF 90 is better suited for prolonged sun exposure or for those with fair skin.

Which one should you choose?

The best SPF level for you depends on your skin type, the amount of time you'll be spending in the sun, and your personal preferences. If you burn easily or have a history of skin cancer, a higher SPF may be suggested. However, SPF 30 is usually sufficient for most people as far as daily protection goes.

Ultimately, the most important factor is to choose a broad-spectrum sunscreen that protects against both UVB as well as UVA rays. Remember, no matter the SPF level, sunscreen is only effective if you apply it correctly and reapply as needed.