DHT Blocker with Immune Support Hair Loss Supplement is the first formula to combine DHT reducing quality nutritionals with prebiotics, probiotics. Used for progressive hair growth, immuno-support, and maximum nutrient transfer to external cells. The Advanced Trichology DHT BLOCKER with Immune Support balances the internal systems preventing the inflammation that causes hair loss. This supplement was formulated by Certified Trichologists and the experts at Evolution Hair Loss Institute.