VerdictAI
#1 in Best Hair Masks & Treatments

Olaplex Nº. 6 Bond Smoother: Leave-In Styling Treatment | Smooths, Conditions, & Strengthens | Frizz Control for Up to 72 Hours

Best for

Best overall

Amazon rating

★★★★★4.7(54,383)

Amazon aggregate, one input among many in the Verdict Score

Verdict scoreGreat
87/ 100

Current price

$22.40

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Updated Jun 27, 2026 · 1 min read

Olaplex Nº. 6 Bond Smoother: Leave-In Styling Treatment | Smooths, Conditions, & Strengthens | Frizz Control for Up to 72 Hours

The consensus

What reviewers found

Synthesized across the trust-weighted source mix below.

Across the verified-purchase reviews we could gather, Olaplex's N°.6 Bond Smoother is the most broadly validated product in this pool, carrying a 4.7-star average over roughly 54,000 ratings. As a leave-in styling treatment rather than a rinse-out mask, reviewers most often praise it for frizz control, smoothing and heat-styling prep, with many describing it as a daily finisher that doubles as light repair.

What reviewers liked

  • Very high verified-purchase rating (4.7) backed by an unusually large review base
  • Leave-in format praised by buyers for frizz control and smoothing
  • Marketed for all hair types including curly and coily

Where it falls short

  • No independent lab or expert testing was available in our data to corroborate buyer claims
  • A little goes a long way but the per-ounce cost is higher than drugstore masks
  • Some reviewers note it's a styling smoother, not a deep structural repair treatment

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Across the reviews

Synthesis · not our verdict

Across the verified-purchase reviews we could gather, Olaplex's N°.6 Bond Smoother is the most broadly validated product in this pool, carrying a 4.7-star average over roughly 54,000 ratings. As a leave-in styling treatment rather than a rinse-out mask, reviewers most often praise it for frizz control, smoothing and heat-styling prep, with many describing it as a daily finisher that doubles as light repair.

Key specs

Source: Amazon listing
72-hr frizz control / humidity resistant
Moisturizes
Smooths
Conditions
Detangles
Strenghtnes
Repairs
Reduces breaktage

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