OLAPLEX Nº.4C Bond Maintenance Clarifying Shampoo | Deep Cleanse + Shine

Olaplex
A weekly deep-cleansing shampoo that removes product buildup, excess oil and hard water mineral deposits while delivering OLAPLEX bond-care — without stripping the bonds already built.
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Regular price $49.00 Sale price $36.80
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Complete the Routine

The Moda Take

A weekly deep-cleansing shampoo that removes product buildup, excess oil and hard water mineral deposits while delivering OLAPLEX bond-care — without leaving hair feeling stripped.

The Moda Team Review

Nº.4C is the periodic reset in the OLAPLEX shampoo range — a clarifying formula used weekly or as needed when buildup is preventing the regular system from working properly. Hard water minerals, dry shampoo residue, styling product and oil accumulation all dull the hair and prevent Nº.3 and Nº.4 from performing at their best. Nº.4C clears the surface so the system can work unobstructed.

Why Moda Carries This

OLAPLEX is the bond repair system our clients ask for by name — and with good reason. The patented Bis-Aminopropyl Diglycol Dimaleate technology was the first to actually address the structural damage that chemical processing causes, rather than just coating the surface. Nº.4C in particular is relevant for clients in hard water areas — which is most of Ontario — where mineral deposits accelerate colour dullness and reduce treatment effectiveness.

Key Ingredients

  • OLAPLEX Bond Building Technology: Active bond repair through the clarifying step.
  • Broad-Spectrum Clarifying System: Removes buildup, excess oil, and hard water mineral deposits without stripping.

Moda Pro Tip

For clients in hard water areas — which includes most of Ontario — Nº.4C weekly makes a visible difference to colour longevity and product performance. Mineral deposits accumulate invisibly until the colour starts looking flat or Nº.3 stops feeling as effective. Regular Nº.4C use keeps the slate clean.

How To Use

  1. Use weekly or as needed in place of Nº.4 Shampoo.
  2. Massage into wet hair, build lather, leave on for 1–2 minutes.
  3. Rinse thoroughly and follow with Nº.5 Conditioner.
  4. Return to Nº.4 for regular washes.
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COMMON QUESTIONS

Good to Know

Yes — once a week is appropriate for clients in hard water areas or heavy dry-shampoo users. For most people, once every 2–4 washes is sufficient. Nº.4C is not a daily shampoo — use it as a targeted reset when buildup is the issue, then return to Nº.4.
Yes — hard water minerals deposit on the hair shaft and cause colour to look dull and shift brassy. Nº.4C removes those mineral deposits along with product residue. For blonde or lightened hair in hard water areas, pairing Nº.4C occasionally with Nº.4P for toning covers both issues.
No — Nº.4C is colour-safe and formulated with OLAPLEX bond-building technology, so it clears buildup without the stripping effect of a traditional clarifying shampoo. Used at the recommended frequency, it supports rather than undermines colour longevity.
Yes — dry shampoo residue accumulates at the scalp and on the hair shaft and is harder to clear with a standard shampoo. If you use dry shampoo 2–3 times between washes, using Nº.4C on your next wash day is the right move. It removes what standard shampoo leaves behind.
Yes — apply Nº.3 or Nº.3PLUS first as a pre-wash treatment, then shampoo with Nº.4C, then condition with Nº.5. The pre-wash bond repair step and the clarifying shampoo step work well together — the clarifier clears the surface and the treatment works on the structure.
SALON NOTE

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Professional hair care can be personal. If you're unsure whether this product is right for your hair type, goals, or routine, our team is happy to help you choose with real salon experience behind the recommendation.
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