It's the sun protection index.
The higher the sun, the better the sun protection.
Um... It's kind of vague to talk about the top...
It means that the UV protection lasts a long time when you apply it once.
Therefore, it is difficult to say that high is particularly good if you look at the blocking rate itself.
I have to apply sunscreen often anyway.
In the summer, I sweat a lot and it comes off quickly.
I heard that 15 is enough if you apply it often.
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