ComfyUI Workflow: Face Swap with ReActor + FaceDetailer

This ComfyUI workflow swaps a face from one photo onto another using ReActor, then passes the result through FaceDetailer so the new face keeps its skin texture and lighting instead of looking pasted on. Two images in, one edited photo out.

How It Works

The graph chains two stages:

• ReActorFaceSwap detects the face in your source image and transfers it onto the target image. It handles the swap at the facial-structure level, so the result follows the target's head pose and framing.
• FaceDetailer, driven by an Ultralytics face detector, then re-renders just the face region at higher quality. This is the step that fixes the blur and colour mismatch a raw swap usually leaves behind.

A CLIP text prompt and a standard SD1.5-family checkpoint drive the detail pass, which gives you control over how the final face renders.

Quick Start in ComfyUI

• Load the workflow using the download button on this page.
• Install the custom nodes when prompted: ComfyUI Impact Pack, ComfyUI-ReActor, and an image-saver node. ComfyUI Manager can install all three.
• Load two images: the face you want to use, and the target photo that will receive it.
• Set your checkpoint. A realism-focused SD1.5 checkpoint such as Realistic Vision gives the most natural results.
• Run the queue and check the face region before upscaling or exporting.

Good To Know

• ReActor downloads its face-swap and restore models on first run, so the initial queue takes longer than usual.
• Keep both source images at a similar resolution to the target. Extreme size gaps between the face and the photo show up as soft edges.
• Only swap faces onto images you have the rights to edit, and label the output as edited. Face-swap tools are banned in several contexts, including political content, in many jurisdictions.

Why Use This Workflow

• The two-stage chain beats a bare ReActor swap: the FaceDetailer pass is what makes the result usable.
• Everything runs locally. No upload to a face-swap website, no watermark, no queue behind other users.
• The same graph extends: the source repo ships two larger variants that add style control and a final upscale pass.