Surface Blur is smarter than Gaussian Blur: it only smooths areas of similar color, so the skin softens while the contours survive. Add a black mask and paint the effect in with a white brush only where you want it, and the texture stays.
Duplicate the Background layer
Open your photo. In the Layers panel, drag the Background layer onto the “New Layer” button, or use the shortcut Ctrl+J (Win) / Cmd+J (Mac) to duplicate it. The blur goes on this copy, so a mask can control exactly where the retouching applies.
Apply the “Surface Blur” filter
Select the duplicated layer and choose “Filter” -> “Blur” -> “Surface Blur” from the top menu. This filter is the key to skin work: it blurs the skin while preserving edge detail as far as it can. Adjust the values to suit the photo's resolution:
- Radius: usually around 10-15; it controls how far the blur reaches.
- Threshold: usually around 10-20; it controls how sensitive the filter is about keeping edges.
The goal is smooth skin where the eyes, brows, and other edges are still clearly readable.
Add a black mask
Make sure the blurred layer is selected and click the “Add Layer Mask” button at the bottom of the Layers panel (the icon is a square with a circle in the middle). By default you get a white mask, which shows all of the blur. Press Ctrl+I (Win) / Cmd+I (Mac) to invert the mask to black. A black mask hides the blur completely, returning the photo to its original state.
Paint the smooth skin in with a white brush
Select the Brush tool B and set the foreground color to white. In the options bar at the top, use these settings so the transition stays natural:
- Brush type: a soft round brush.
- Opacity: 30% - 50%.
- Flow: 30% - 50%.
Now paint over the skin. Avoid the eyes, brows, lips, hair, and clothing edges — anything that needs to stay sharp. By controlling the brush opacity and the number of passes, you can dial the retouching strength precisely and get a natural, invisible result.
Pro tips
- Keep the texture: don't push the blur radius too far or the skin turns plastic. After blurring, the History Brush can bring some of the skin texture back.
- Deal with blemishes first: for obvious acne marks and spots, remove them with the Spot Healing Brush or Clone Stamp before doing the overall smoothing.
- Using Online PS: if you don't have PS installed, you can do everything above at www.zaixianps.cc. The interface and shortcuts are almost identical to the desktop version, so it's an easy swap.
Going further: bring detail back with High Pass
To keep the skin from going flat after retouching, stack a sharpening layer on top of everything. Stamp the visible layers with Ctrl+Shift+Alt+E, apply “Filter” -> “Other” -> “High Pass” (radius 1-3 px), then change that layer's blending mode to “Linear Light” or “Soft Light”. That restores skin texture and the overall crispness of the photo.
Summary: “blur plus mask” is the most efficient basic retouching workflow. Once it's in your fingers, you can finish a photo's skin in five minutes. Whether you're batch-editing for a studio or retouching portraits day to day, this technique will speed you up enormously. Open PS — or go straight to www.zaixianps.cc — and practise right now.