NO.5 FINE BOND MAINTENANCE COND 8.5FLOZ. Benefits: Doubles hair volume, adding body, bounce, and lift at the root. Replenishes weightless hydration, for soft, lightweight hair and improved detangling. Repairs everyday damage, defends against future breakage & strengthens. Key Ingredients: Flexible Polymers & Low Molecular Weight Hyaluronic Acid - Helps provide volume and lift at the roots & promotes soft, hydrated hair.. Patented OLAPLEX Bond Building Technology - Strengthens hair & repairs damage by rebuilding the disulfide bonds.. Hydra-Balancing Matrix - Leaves fine hair weightlessly clean and hydrated without over-conditioning.. Research Results: 2X more volumized hair, instantly & all day*. 2X stronger hair at a molecular level*. 90% more weightless hydration and easier detangling*. *When used as a system with No.4FINE Bond Maintenance Shampoo.