No, Nash Grier does not wear contact lenses, at least not coloured contact lenses. His eyes are naturally that vivid aquamarine blue.
This also means we were all a little like Nash Grier at one point!
Here are some other facts about eye colour that you might be interested in:
The iris
The colour you see in someone's eye is in the iris. This is flat disc with a hole in the middle - the pupil. The iris is always blue as a basic colour but people have different levels of the pigment melanin and that is what makes our eyes different colours.
The melanin scale
People with no or very little melanin have the bluest eyes - like Nash Grier. A little bit of melanin will make eyes greener and a lot will make them a lovely deep brown. How much melanin you've got is down to genetics, so if you don't like your eye colour, complain to your mum and dad.
