Blur paint

Blur all unmasked paint on an image layer

1. Select the image layer you want to blur.
2. Choose Paint Edit > Layer Effect > Blur Layer. To set the amount of blurring, choose Paint Edit > Layer Effect > Blur Layer  to open the Blur Layer Options box. Adjust the Blur Radius from 0 (no blur) to 32 (maximum blur), and click Go.

Blur paint by brushing

1. Select the image layer you want to blur paint on.
2. Choose Paint > Effect Brush > Blur Brush. To set the amount of blurring, choose Paint > Effect Brush > Blur Brush  to open the Brush Options box, and adjust the Blur Strength from 0 (no blur) to 32 (maximum blur).
3. Drag the stylus on the area of the image layer you want to blur.
   Tip:

   You can use any brush as a blur brush by setting Brush Mode to Blur in the Brush Options window.