Eyelashes created with SkinGen in Character Creator 3, and customizing textures by using the SkinGen Premium Plug-in.
SkinGen (free feature): https://www.reallusion.com/character-creator/skingen.html
SkinGen Premium Plug-in: https://www.reallusion.com/character-creator/skingen-premium/

The Eyelash tool in SkinGen Premium Plug-in for Character Creator 3 provides three eyelash layers and two color adjustments per layer.
SkinGen Premium Plug-in https://www.reallusion.com/character-creator/skingen-premium/
Changing eyelash color and adjusting the eyelash morph sliders
Applying different eyelash contents and adjusting the details.