Optical illusion leaves you spinning – look at it for 20 seconds and then watch your hands

A MIND-BOGGLING optical illusion has left viewers having to blink twice after the crazy effects.

The trippy visual was uploaded to social media platform Reddit by a user who posts under the name Conun-Drum.

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The post is captioned: "This video will make your hands melt."

In the video, layers of black and white circles made up of tiny blocks spin in different directions at the same time.

This gives a hallucinatory effect of some circles growing towards you while others fade away.

But if you focus your gaze for twenty seconds on the inner middle circle where letters flash up before looking at your hands - you will be in for a trippy surprise.

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It appears as though your hand is both moving and melting at the same time.

One viewer was astounded by the post, saying: "So why does this happen? How come it lasts longer the more I look at it?

"Can I permanently alter my vision by staring at it long enough? Will this hurt my brain if I stare at it too much? So many questions."

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