Is it better to have high numbers when you buy sunscreen?

pu1. I think it's the UV protection index. The higher the number, the longer the duration

2017-12-02

OK

pu2. In summer, you sweat a lot and the sun cream is washed away, so you have to apply it every 2-3 hours, but in that case, it's meaningless whether it's 35 or 50
Even if it's winter, the sun cream is washed away because of the oily face
So if you do about 15, it lasts that long
It's better to find something that's less irritating to your skin than high sun protection

2017-12-02

OK