Particle system doesn’t align hair object to assigned vertex group Hair is giving me grey hair! I’ve been trying this and failed on several models in the past, so here’s the latest headache I’m encountering…



The selected vertex group for the top eyelashes is above the eye’s opening (seen here in orange)...



and the vertex group is assigned in the hair particle system…



…and I’ve subdivided the area before creating the vertex group, I also applied rotation, scale and location to both the eyelash (on the second layer) and the mesh with the eyelids.

And yet here we are, looking at the Frankenstein monster’s eyelids :)

I’m not sure what I’m missing, and I always get stuck at this point with particle hair systems. Every answer or help I’ve found online retraces all the steps I took for better results.
Your particle system is correctly setup, and your particles are being correctly emitted from your chosen vertex group.

There is only one eyelash particle being emitted though, I am guessing you will need more than one.

What your are seeing are Particle Children which are instanced from the parent one around a predefined radius. This radius is far bigger than the area you would want eyelashes to emit from.

Either reduce the radius, or disable children completely and increase the number of actual particles instead.

Turning off Rotation and emitting from Vertex instead might also help achieve a more tame look.