How to disinfect your iPhone screen?

I just bought my iPhone five a few months back, And I was wondering how to disinfect the screen. Lots of my friends have been touching my phone screen who are sick, and I want to be able to clean the screen and kill germs. I don't want to use alcohol or water or any of those other sprays or disinfects because that'll damage the phone screen. Is there any type of wipe I can buy from apple or another place that you can use to clean or disinfect the screen? If so where can I buy it? Are there any at home SAFE products I can use that will for sure not damage the iPhone 5 screen?

You're not supposed to apply alcohol to the screen itself, but I have screen protector that I apply alcohol wipes to every week.