Wella Professional Fusion Amino Refiller Treatment is a concentrated hair repair formula designed to restore strength and vitality to damaged, weakened strands. Enriched with amino acids and keratin, this 70 ml treatment penetrates the hair shaft to rebuild structure from within, reducing breakage and improving elasticity. Ideal for color-treated, chemically processed, or heat-damaged hair, this refiller works to seal the cuticle layer and lock in moisture. The lightweight formula absorbs quickly without weighing hair down, leaving strands smoother, shinier, and noticeably more resilient. Apply to damp hair, focusing on mid-lengths and ends. Leave on for 5–10 minutes, then rinse thoroughly. Use 1–2 times weekly as part of your professional hair care routine for optimal results.