1. Workflow Overview

This workflow specializes in facial skin texture restoration and super-resolution enhancement, integrating:

• SUPIR Model: Diffusion model for detail reconstruction

• Stable Diffusion XL Lightning: Base image generation

• ControlNet (via ReActor): Facial feature correction

• Upscale Models: 4xFFHQDAT.safetensors (2x) + 1x-ITF-SkinDiffDetail (4x)

2. Components Breakdown

Key Nodes:

1. SUPIR_model_loader_v2

   • Purpose: Load SUPIR-v0Q.ckpt

   • Install: Requires comfyui-supir via ComfyUI Manager

   • Dependency: Download SUPIR-v0Q.ckpt

2. ReActorRestoreFace

   • Purpose: Face restoration with GFPGANv1.3

   • Install: reactor-node plugin

   • Model: Auto-downloads retinaface_resnet50

3. ColorAdjust(FaceParsing)

   • Purpose: Adjust facial color balance

   • Install: comfyui_face_parsing plugin

Special Dependencies:

• t5xxl_fp8_e4m3fn.safetensors (text encoder)

• 1x-ITF-SkinDiffDetail-Lite-v1.pth (skin detail upscaler)

3. Workflow Structure

Group Logic:

• Group 1: SUPIR Restoration

  • Input: 512x512 portrait

  • Process: SUPIR_encode → SUPIR_conditioner → SUPIR_sample

  • Output: Refined latent

• Group 2: Facial Enhancement

  • Steps: ReActorRestoreFace → ImageResize+ → ColorAdjust

  • Key Params: Skin smoothness=1.05, Color saturation=1.1

• Group 3: Super-Resolution

  • Model Chain: 4xFFHQDAT (2x) → 1x-ITF-SkinDiffDetail (4x)

  • Output: 2048x2048 HD image

4. Inputs & Outputs

Input Parameters:

• Required:

  • Source image path (ComfyUI_01312_.png)

  • Prompt: "high quality,detailed,photography"

• Optional:

  • Seed (default: 123)

  • Denoising strength (default: 1.5)

Outputs:

• Format: PNG

• Save Path: ComfyUI/output

• Includes: Before/after comparison (via Image Comparer)

5. Notes

• Hardware: Minimum 12GB VRAM (16GB recommended)

• Common Errors:

  • SUPIR_VAE not found: Verify model path under models/supir

  • Face distortion: Reduce ReActor's Fidelity Scale

• Optimization:

  • Use PurgeVRAM to free memory

  • Disable live preview for batch processing