Key ingredients
4.4/5
Clarifying and Bond tech are the main actives in this hard-water shampoo.
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No.4C Bond Maintenance Clarifying Shampoo
$34.00
Olaplex No.4C is the bond-aware clarifier — deep cleanse for buildup and hard-water dullness when you still care about treated hair feel.
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The Edyt Score
4.4 / 5.0
Targets
4.4/5
This hard-water shampoo is for olaplex No.
Formula standards
4.4/5
The formula is a 4C.
The verdict
This hard-water shampoo suits olaplex No.
Compare against similar products
Side-by-side vs 6 near substitutes (Malibu C, Paul Mitchell, Ouidad, Redken, Kristin Ess, and Joico) — best for, job, hair/scalp fit, format, Edyt score, and notes. Swipe sideways to compare.
| Pick | |||||||
|---|---|---|---|---|---|---|---|
| Best for | Color-treated clarifying | Mineral-heavy well or city water | Weekly clarifying reset | Curly hair + mineral film | Heavy buildup weeks | Mid-price hard-water detox | Chlorine + fragile hair |
| Job | Clarify | — | Clarify | Clarify | Clarify | Volume | Clarify |
| Hair / scalp | — | — | — | — | — | Oily / acne | — |
| Format | Hard-water shampoo | Hard-water shampoo | Hard-water shampoo | Hard-water shampoo | Hard-water shampoo | Hard-water shampoo | Hard-water shampoo |
| Edyt score Methodology: The Edyt Score reflects ingredient profiles, concentration, and formulation standards. It is separate from crowd-sourced user reviews. | 4.4 | 4.7 | 4.5 | 4.5 | 4.4 | 4.3 | 4.2 |
| Notes | 4C · Color-aware | Hard-water labeled · Sulfate-free | Classic · Chlorine | Curly-focused · Buildup | Salon · Detox | Hard-water callout · Detox | Chlorine · K-PAK |
| $ / size | $34.00 | $39.98 | $16.00 | $24.00 | $31.00 | $19.00 | $24.50 |
| Shop | Buy on AmazonThis page | Buy on AmazonProduct page | Buy on AmazonProduct page | Buy on AmazonProduct page | Buy on AmazonProduct page | Buy on AmazonProduct page | Buy on AmazonProduct page |
FAQ
Who is No.4C Bond Maintenance Clarifying Shampoo best for?
Olaplex No.4C is the bond-aware clarifier — deep cleanse for buildup and hard-water dullness when you still care about treated hair feel.
How did Edyt Beauty score this hard-water shampoo?
Edyt Beauty rates No.4C Bond Maintenance Clarifying Shampoo 4.4 out of 5 from the ingredient list, who it is for, and how the formula is built. That is separate from crowd-sourced user reviews.
How does it compare to similar products?
The compare table above stacks No.4C Bond Maintenance Clarifying Shampoo against near substitutes for the same shopping job, including picks from Malibu C, Paul Mitchell, Ouidad, Redken, Kristin Ess, and Joico. For more from the same brand, see More from Olaplex below.
Where can I buy it?
Shop No.4C Bond Maintenance Clarifying Shampoo with the Buy on Amazon button when it is available. We may earn a commission from qualifying purchases. Prices and availability can change. You can also find it in our guide to Best Shampoo for Hard Water.
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Redken
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Kristin Ess
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Joico
K-PAK Daily Clarifying Shampoo
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