Flux.1 S Workflow with Lightning Upscale

Workflow made for Flux1.S model ArtFusion Flux, using RealVisXL Lightning as upscaler and detailer.

ArtFusion Flux uses only 3 steps for the prep work
RealVisXL does the finishing touch with 6 steps

This is made because Flux.1 Schnell lacks some details in the skin and often too smooth and shiny.

The amount of influence of the detailer/upscaler can be adjusted with the denoise weight, but 0.2 is mostly fine. You can use any realistic SD1.5 or SDXL model you like for the finetuning.

ArtFusion Flux
This is one of the only 100% pure Flux.1 S based custom models, so it doesn't have the Dev license.