When you edit a photo in Photoshop using one of the image adjustment tools like Hue/Saturation or Brightness/Contrast, the image’s pixels are physically altered. This means that if you change the Hue, save, and then change the Hue again, the image’s quality will suffer.
What can you do to limit the damage? Use Photoshop’s Adjustment Layers instead. Adjustment Layers provide the exact same editing abilities as the standard image adjustments, but they allow you to edit non-destructively on your images.
To use Adjustment Layers:
- In Photoshop, choose Layer.
- Select New Adjustment Layer.
- Select the desired adjustment layer type (e.g., Hue/Saturation).