This turned out to be a contest between the Paula Dorf and Tom Ford offerings, as I found the Trish McEvoy #29 hairs too coarse (patchy eyeshadow appearance sadface) and scratchy (actual physical pain rly dnw) to be usable -- my guess is that it is made from horse hair, as the components of their brushes are apparently shrouded in multiple-attempts-to-contact-the-company-failed mystery :P Tom Ford #13 and Paula Dorf Sheer Crease are both goat hair brushes.