Olaplex N°.4 Bond Maintenance™ Hair Strengthening Shampoo: Repairs Damage & Defend Against Future Breakage | Replenishes Hydration | For Coily, Curly, Straight, and Wavy, 250 mL / 8.5 Fl Oz

by Olaplex · ASIN B08TWQ37XF

Repair everyday damage in 1 wash. This #1 best-selling prestige shampoo strengthens and reinforces bonds for more resilient hair, at a molecular level. The luxuriously nourishing and abundant lather gently cleanses and replenishes hydration– never stripping essential moisture– leaving hair soft and lightweight. Clinically proven to boost shine and reduce split ends and frizz. Formulated for straight, wavy, curly, and coily hair types with medium to coarse textures – plus all porosity levels. Dermatologist Tested. Vegan. Color-Safe and suitable for chemically treated hair. KEY BENEFITS ✓ Repairs everyday damage and defends against future breakage ✓ Strengthens and reinforces bonds for more resilient hair ✓ Gently cleanses without stripping ✓ Replenishes hydration and enhances softness ✓ Clinically proven to boost shine, smooth, and reduce frizz ✓ Dermatologist tested, vegan, color-safe, and suitable for chemically treated Clinically Proven ● Repairs everyday damage in 1 wash ● Strengthens hair at a molecular level ● Defends against future breakage in 1 wash* ● Reduce split ends, frizz, and flyaways in 1 wash* ● 73% Increase in hydration ● Soft, shiny, and more manageable hair in 1 wash* *When used as a system with N°.5 Bond Maintenance Shampoo

Lowest price seen · Checked 2026-08-01

Price as of Aug 1, 2026, 3:47 p.m. EDT. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.ca at the time of purchase will apply to the purchase of this product. As an Amazon Associate I earn from qualifying purchases.