What is the difference between spf50 and spf100 sunscreen?

Sunscreen is a product used by many people and is a must-have sunscreen product in summer. So which is better, SPF50 or SPF100? What is the difference between spf50 and spf100 sunscreen?

Which is better, spf50 or spf100 sunscreen?

SPF50 sunscreen is more recommended

In fact, in 2011, the U.S. Food and Drug Administration recommended that the maximum SPF of sunscreen be limited to 50. The U.S. Environmental Working Group also believes that there is no evidence that sunscreens with an SPF value of more than 50 can extend the protection time in the sun or have a better sun protection effect.

Even high-factor sunscreen may give people the illusion that "because the sunscreen is long-lasting, there is no need to apply it repeatedly", which is not conducive to sun protection.

What is the difference between spf50 and spf100 sunscreen

1. The duration of sun protection is different

SPF is a multiple of the time your skin is protected from UV damage. Generally speaking, a person who stays in the sun for less than 10 minutes without any sun protection will not get sunburned. Using SPF15 sunscreen can extend this time by 15 times, or 150 minutes of protection from UV rays; SPF50 sunscreen can extend it by 50 times, or 500 minutes. SPF100 means the sun protection time is 1000 minutes

2. The sun protection effect is similar

The difference between SPF50 and 100 sunscreen is only 1%!

Theoretically, the higher the SPF value, the better the sun protection effect. However, according to FDA data, the sun protection effect is not significantly enhanced after SPF exceeds 50. Specifically, there is only a 1% difference in effectiveness between SPF50 and SPF100 sunscreens. In other words, SPF50 sunscreen can block 98% of UVB, while SPF100 sunscreen can effectively isolate up to 99%.

Okay, my friends, do you know which sunscreen is better, SPF50 or SPF100?