The sunscreen I chose

Someone asked for sunscreen recommendations on the community beauty Q&A, but everyone just applies sunscreen and there's no one who really knows, so there's no response. My wife recommended one for me to try, and these days I am making an effort to apply it.

I've never applied sunscreen in my life, but I'm starting to worry.

Are you trying to apply it or something?

I still don't know what the numbers written there mean.

You know you shouldn't put on sunscreen and then go into the pool, right? The ingredients are said to have a very harmful effect on the environment.