Let’s check this Houdini Vellum Hair simulation, tutorial by VFXArabia, a nice trick that will allow you to up res an already simulated vellum hair, in the example we will see the simulation of 350 hairs and boosted them to 5000.
Houdini Vellum Hair simulation steps are:
Generating the low res strands.
Create the vellum simulation.
Generate the high res one and use the low res as a guide.
Well it sounds complex but believe me it’s a strait forward setup, also it was the first time to use the Redshift hair shader so it’s a good practice.