1. Open Photoshop. Open the image to
apply metal polish.

2. Make a duplicate of the background layer and keep
the duplicate layer selected. Change the top layer mode to "Screen"

3. Image > Adjustments
> Hue/Saturation (Hue: 0 Saturation: +70 Lightness: +10)

4. Image > Adjustments
> Brightness/Contrast (Brightness: +20 Contrast: +20)

5. Filter >
Sharpen > Sharpen

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