I have a screw that won't loosen completely it spins to the right and the left but ends up tightening again. I think it has a certain point where it'll just let go and be able to be pulled out but I don't know how to do that. It's not a regular screw that I've ever seen it has a hexagon deep inside but it has space for a regular Phillips screw driver and a flat head.
Is this screw part of a furniture assembly? What you describe sounded like a cam-lock nut, like can be seen here: http://www.swedishfurnitureparts.com/products/ikea-cam-lock-nut-103433 If that's it, then it won't actually retract, you just align it so the adjacent part can be removed. There should be a dot or indicator showing you which way it needs to be aligned.