I used Iklear on my nikon d3000, is that ok?

I heard that Iklear was good to use on lenses and everything and I've used for my screens on my phones. Is this okay?

On the LCD, probably, but I wouldn't use it on your lens.

A simple microfiber cloth typically is enough. I wouldn't use any fluids or chemical substances on it unless absolutely necessary.

I just googled for iKlear… Apparently that stuff is a total rip-off.

Do NOT use Iklear on your lens. It will destroy the special coating on it.

Who on earth told you it was "good" to use on lenses? They are obviously NOT a photographer, nor have they ever spent any time in a photo class

To clean lenses, use NO liquids of ANY kind except maybe a drop of clean water if there's something grimey on there.

a simple swipe with a microfibre cloth should get rid of 99% of everything that may ever get on the lens