I have asked a museum to have informations about it.
It’s goat fur.
But i really don’t know how to do it with blender. Please, can somebody show me the way ?
If you work with the “old” particld system, I found the following to be helpful:
Always work with children particles, the wow options are there (clumping, roughness and kinks mainly)
Use several particle systems for the different type of hair, especially the different lengths (really important, since the intensity of effects is the same for all hair in a particle system. Imagine displacing a long 20 cm hair 1 cm in a direction. No big deal. Do the same on a 0.5 cm hair and you got a mess)
Crank up the segments for rendering, viewport and when editing particles if your computer can handle it
Use a clump curve and play around with the different roughness options, in particular the endpoint one
Use the sliders allowing only a part of the children particles to be affected
Make sure you use a principled hair shader - a principled BSDF might look fine at first, but this radial roughness factor is really key to realism I think.
I found that a photo works really well as the basis for the color into a principled hair BSDF
If you are unsure about the color, go with the melanin option and some color variation, so you’re sure to end up in a prealistic ballpark
Groom your particles manually, that’s really a must for good looking results. If you gat bad perfromance, hide all the other particle systems, they seem to interfere with each other in particle edit mode for some reason
Experiment with the kinks. Lower the amplitude by a factor 10-100 for starters, then play with the frequency until you see an effect. Don’t try anything complex without 10-ish segments (like curls)