The proper use of sunscreen

[Nordic Bill]

Just in case my thread title would have you wondering if I have logged onto the proper website ...

How do "sunscreen" and the number "25" fit into this sentence?:

"He uses sunscreen 25"
"He uses sunscreen protection 25"
"He uses 25 sunscreen"
"He uses a 25 sunscreen"

Or perhaps there's a better way than any or all of the above?

I've never been able to figure out the proper phrasing for this one. Hope someone can help.

Thanx.

[Casiopea]

I use SPF 30. ('30' is the level of Sun Protection Formula)

I believe 'SPF 30' might be an example of a postpositive adjective. Click on the link below to read more.

http://www.ucl.ac.uk/internet-gramma...iv/postpos.htm