Zbrush - 100 Animal Skin Brushes Library by BlackDiamond4 on DeviantArt
Pablo Munoz G. - ZBrush SKIN brushes pack FREE Update! - In case you missed it, I have updated the SKIN brushes pack with 26 new custom brushes for sculpting high-frequency details
Free ZBrush Skin Alpha Brushes Pack for download By Rafael Souza - CG3DANKFUN:MARKETPLACE
Artistic Squad - Wounds and Scars Maker: 300 ZBrush Brushes And 60 Alphas