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Olaplex
Olaplex N°.4 Bond Maintenance™ Hair Strengthening Shampoo: Repairs Damage & Defend Against…
$34
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Elevated Amazon Home Favorites — 75 finds
Also in Elevated Amazon Home Favorites
The Quick Take
What it is
A color-safe shampoo formulated with coconut oil-derived surfactants to cleanse without stripping moisture. It's for anyone dealing with breakage, frizz, or dryness across all hair types.
Why We Like It
Why it keeps winding up in carts
78,517 reviews at 4.6 stars speak to real, repeatable results—90% smoother hair and 49% less breakage when used as a system.
The shampoo that actually strengthens as it cleanses.
Crowd Takeaways
Most reviewers land in the same place: transformed — visible hair improvement.
Ranked by how often each reaction comes up, strongest first, reservations last. Based on 78,517 Amazon ratings for this product.
Our Take
A cult favorite that delivers on its promise of stronger, shinier, more manageable hair.
At $34, Olaplex N°.4 is a premium shampoo that justifies its price with clinically proven performance. This isn't a budget bar—it's a targeted treatment shampoo designed to repair damage and prevent future breakage, especially when layered with the full system.
The Buying Guide
What to look at before you buy
01
Coconut oil-derived surfactants
Cleansing Power
The gentler surfactant base means you're not stripping moisture while you wash. It creates an abundant lather without that tight, squeaky feeling that can worsen breakage. Ideal if you've been burned by harsh cleansers before.
02
49% reduction in breakage (when used as a system)
Breakage Reduction
That's a measurable claim backed by clinical testing. The shampoo works as part of a trio, so solo use will deliver benefits, but the full N°.3/4/5 system is where the magic compounds. A heads-up if you're looking for a one-step fix.
03
90% smoother, better detangling, more conditioned
Hair Feel
The result is noticeably smoother strands, easier combing, and a conditioned texture—not stripped. Works on coily, curly, straight, and wavy textures, so there's genuine range here.
Good to know
The details worth having
- PriceAt $34 for a single shampoo, it's premium-tier pricing, but the clinical results and massive review count justify the investment for serious breakage concerns.
- Who it’s forBest for people with damaged, fragile, or breakage-prone hair who are ready to commit to a system approach (or at least pair it with a good conditioner).
- From the product pageA highly concentrated, color-safe shampoo proven to reduce breakage and nourish hair leaving it smoother, shinier, and more manageable with every wash.
- From the product pageKEY BENEFITS ✓ Reduces breakage and strengthens hair ✓ Gently cleanses without stripping moisture ✓ Hydrates, smooths, nourishes, and detangles
- From the product pageClinically Proven 90% smoother, better detangling, more conditioned* 49% reduction in breakage *When used as a system of Nº 3, Nº 4, and Nº 5.
- From the product pageINGREDIENTS Gentle Blend of Coconut Oil-Derived Surfactants Provides an easy, abundant lather that leaves the scalp and hair feeling hydrated.
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