The Fluxmodel currently offers brilliant images, but they all have a slightly plastic character - especially in the NSFW representation. I have used an SD15 upscaler and find the results convincing.
I have created an IMG2IMG workflow with an SD1.5 Upscaler which reliably provides realistic skin textures. It also works with semi-realistic PONY-generated images.
Everything looks more lifelike and not as artificial as the exclusively FLUX-generated images without losing the ingenious prompt reliability of the FLUX model.
The SDXL upscaler is ideal for SFW or object representations. (SDXL works great for enhancing low quality images of all kind - try it)
Maybe youn want to checkout my TXT2IMG Workflow too?
V1.0 SD15/SDXL Upscale + Reactor- for NSFW and Skin (best suited to generate realistic NSFW content)
Reactor Faceswap on board ;-)
However, you can simply switch the groups on and off - depending on your needs
As an upscaler for SD15 I recommend AngrA RealFlex
As an upscaler for SDXL I recommend RealVisXL V4.0 Lightning
Checkout some SD15 samples
Pay attention to the SD15 embeddings used ;-)
i used the following model
FluxUnchained, Artful NSFW capable flux.d tuned model by SoCalGuitarist
But you can of course also use any other FLUX model
I look forward to your comments :-)