Do you know how light works?

I will tell you!

Light comes out of the sun, and is bounced off a material. Some materials absorb colours, and so there is no more of that colour left in the light to bounce!
After bouncing around for a while, the light gets swallowed by your eyes, and goes down your brain. Then a picture appears!
The picture is what you see!

The reason I am explaining science is to clarify what the shiniest material does. It absorbs no light colours - none at all! And that is what makes it look shiny.

So what is the shiniest material?

Aluminium, of course!