How to repair iphone 5 water damage screen?

So i was coming from italy and i had chocolate in my left side pocket and when my flight was over i check my phone and its covered with melted chocolated now the phone Works great everything is functional but is that streak that really bugs me when i got home i cleaned it and put it inside rice and left it overnight and when i come back the little streak got bigger! I don't know what to do should i replace the screen or try to fix it myself and is it easy to fix? And probably the rice didn't work because it works on water? Please someone help

You should just go to the cracked phone screen repair shop and its not that hard.
you should also search the internet that should help you a lot.

Go to apple

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