Olaplex No. 4 Bond Maintenance Shampoo is a high-performance, sulfate-free shampoo that gently cleanses while actively repairing and strengthening hair. It uses the brand’s patented bond-building technology to target broken disulfide bonds caused by chemical, thermal, and mechanical damage. The formula is rich and concentrated, leaving hair noticeably softer, shinier, and more manageable after just one wash. It’s color-safe, ideal for all hair types, and helps maintain salon results at home by improving overall hair resilience and reducing frizz and breakage over time.
Because of its highly concentrated formula, it can feel a bit heavy for fine or oily hair if too much is used—less is definitely more with this shampoo. It may also take some time to lather properly without a lot of water, which can confuse users accustomed to foamy drugstore shampoos. However, once you learn how to work with it, its deep-cleansing and reparative effects are well worth the adjustment. The price is premium, but the small amount needed per wash means one bottle lasts a long time, making it a worthwhile investment for long-term hair health.
