Keyboard keys

I've always cleaned my keyboard. But after buying this new one and cleaning it last month it became squeaky and lost its soft press feeling. What and where can I buy a lubricant for the keys? And how would I apply it?
Thank you for any help.

Hi BLitzRyke,

You can use Silicone Spray as it is not like WD-40 where there might be a chance the petroleum can slowly eat away at the plastic key. Just a quick spray under the designated key will do the trick.

Thanks a lot!

You're welcome.