April 3rd, 2012 | 
You can always use usual cleaning tools like Clone Stamp and Healing Brush. However for product photography I like to use Photoshop Filters and Masking. Let me show how I do it? Below you can find the simple steps:
1. Open the image and Duplicate Layer
This is 100% crop of the cosmetic brush image
2. Go to Filter/Noise/Median…
For this particular image I’ve choose radius 13. But you drug the slider until all small dust disappear.
3. Filter/Noise/Add Noise(Gaussian, Monochromatic)
Amount 1.5%
4. Filter/Blur/Gaussian Blur
Radius 0.5
Median 13, Noise 1.5, Gaussian Blur 0.5
5. Create Hidden Mask Layer → Layer Mask → Hide All and paint over the object to clean dust and even borders. Do not paint all object, only areas you want to clean.
This is the final result:
This is another example:
Median 9, Noise 0.7%, Blur 0.5
Try it! It’s really fast and easy:-)
Best, Genia.
About The Author: Genia Larionova
I am retoucher, stylist and inspirer. I follow inspiration. I love design, photography, Photoshop, creative ideas, positive psychology.
Thank you very much, although I have doubts over No. 5, perhaps they could give me an explanation.
Thank you.
Paersy, what is your doubts? I do not see anything I can explain more about this step…
@Alex Koloskov, Alex thanks for reply, but how painting with photoshop.
Thanks again.
Nice day.
Thanks Genia, this is going to save me so much time on my jewelry shots! To save even more time I decided to make it a Photoshop Action, with stops, to make adjustments at each step.
Thanks Genia great tip I love that befor after slider by the way