when I go in the ''dissolve' tool the image turns completely gray

Hi @skillful_maker5C13 

I am not aware of a Tool called "Dissolve" in Photoshop. Are you thinking of another tool or are you thinking of the Dissolve blending mode, which can be used with a brush or a layer? Or something else?

Please clarify and show a screen shot of one of these, depending on what you mean:

• Tools panel with the tool selected
• options bar with the Brush tool selected
• Layers panel showing all layers and select the one with Dissolve
• Or whatever else you might be looking at if it's none of these

~ Jane