keyboard not working after cleaning - everything else does :(

hey guys,

I am an idiot and was trying to clean my macbook with a cloth and some cleaning product. when i first noticed the foam, I quickly switched the cloth to a paper towel and kept cleaning. after finishing, I turned it on and now the keyboard isn't working. it boots, USB is fine, internet connection either, but the keyboard won't work at all.

help me please :(

ps: before that, my '4' key wasn't working as well. I mean, when I type in Firefox or other browser, it doesn't work, it sounds like it's stuck, but when I type '4' in Finder or any other writing tool it works fine. it started right after i changed my HD.