OLAPLEX Nº.4C Bond Maintenance Clarifying Shampoo 250ml

Give overloaded, dull or heavy-feeling hair a deep weekly reset with OLAPLEX Nº.4C Bond Maintenance Clarifying Shampoo. This highly concentrated clarifying shampoo removes the impurities and buildup that regular shampoo can leave behind — including hard-water minerals, heavy metals, chlorine, excess oil, pollution and styling-product residue — while helping restore softness, shine and color vibrancy.

Unlike many strong clarifying shampoos that can leave hair feeling rough or stripped, Nº.4C is designed to deeply cleanse without stripping essential moisture or compromising permanent hair color. Its pH-optimized Broad-Spectrum Clarifying System lifts away surface-level impurities while OLAPLEX bond-building technology helps strengthen hair, repair everyday damage and defend against future breakage.

SULFATE-FREE — Nº.4C is officially listed by OLAPLEX as free from sulfates and SLS/SLES. It is also silicone-free and protein-free, making it an excellent weekly cleansing option when you want a serious detox without a traditional sulfate-based clarifying shampoo.

Deep Cleanse → Remove Buildup → Restore Shine → Strengthen → Reset

Why You'll Love It

• Sulfate-Free and SLS/SLES-Free
• Removes hard-water mineral buildup
• Removes chlorine
• Removes heavy metals
• Clears excess oil and styling-product buildup
• Helps remove pollution-related impurities
• Deep cleans without stripping essential moisture
• Helps restore shine, softness and color vibrancy
• Strengthens and reinforces hair bonds
• Helps repair everyday damage
• Helps your following treatments work more effectively
• Suitable for all hair types and textures
• Color-safe and suitable for chemically treated hair
• Silicone-free and protein-free
• Vegan and dermatologist tested

What Does OLAPLEX Nº.4C Do?

Nº.4C goes beyond everyday shampooing by targeting accumulated impurities sitting on the hair and scalp.

OLAPLEX's Broad-Spectrum Clarifying System is designed to remove chlorine, metals, hard-water minerals, pollution, excess oil and product buildup. Removing this buildup can help hair feel cleaner and lighter while restoring softness, shine and the appearance of more vibrant color.

Clarifying also creates a cleaner foundation for the rest of your routine. OLAPLEX specifically says Nº.4C can help maximize the efficacy of your hair-repair routine.

Who Is It For?

Ideal for:

• Hair that feels heavy or coated despite regular washing
• Oily hair with excess buildup
• Frequent users of styling products, oils or dry shampoo
• Swimmers exposed to chlorine
• Hair exposed to hard water
• Dull hair that has lost shine
• Blonde hair affected by mineral buildup
• Color-treated hair that needs occasional clarification
• Fine hair weighed down by accumulated products
• All hair textures, from straight to coily
• All porosity levels

OLAPLEX identifies Nº.4C for all hair types and textures, particularly hair experiencing excess oil, product buildup or hard-water exposure.

Pair Me With

For a complete weekly reset and repair routine:

OLAPLEX Nº.4C → OLAPLEX Nº.3PLUS Complete Repair Pre-Shampoo Treatment → your appropriate OLAPLEX shampoo/conditioner or hair mask

OLAPLEX specifically recommends clarifying before Nº.3PLUS to remove buildup before moving into more intensive repair.

For dry hair after clarifying, follow your routine with OLAPLEX Rich Hydration Mask.

For fine-to-medium hair that needs hydration without heaviness, choose OLAPLEX Weightless Nourishing Mask.

My Hair Still Feels Dirty, Heavy or Greasy After Washing – Do I Need a Clarifying Shampoo?

If your hair still feels coated, heavy, oily or dull shortly after washing, accumulated product, oil or mineral buildup may be contributing to the problem.

Regular shampooing doesn't always remove every type of deposit. Styling products, dry shampoo, oils, excess sebum, pollution and minerals from water can gradually accumulate.

Nº.4C is specifically formulated to provide a deeper reset by removing excess oil, product buildup, pollution, hard-water minerals and other impurities, making it particularly useful when normal shampoo no longer seems to leave your hair genuinely clean.

What Shampoo Should I Use for Hard Water Buildup?

A broad-spectrum clarifying shampoo that can remove mineral deposits is particularly useful if hard water is leaving your hair dull, coated or difficult to manage.

OLAPLEX specifically identifies Nº.4C as suitable for people living in areas with hard water and states that its clarifying system removes minerals and heavy metals from the hair's surface.

This makes Nº.4C especially relevant when your hair feels different despite using the same products — particularly if you have changed location, travel frequently or regularly wash your hair in mineral-rich water.

What Is the Best Shampoo for Swimmers to Remove Chlorine?

Swimmers should look for a clarifying shampoo capable of removing chlorine buildup without unnecessarily stripping already stressed hair.

OLAPLEX confirms that Nº.4C removes chlorine and specifically recommends it as a clarifying shampoo for swimmers.

This makes it particularly useful during periods of frequent swimming, when repeated pool exposure can leave hair feeling dull, coated or difficult to manage.

Nº.4C Bond Maintenance® Clarifying Shampoo

Use weekly or as needed in place of your regular shampoo.

Dispense a small amount and emulsify between your hands.
Apply to wet hair.
Lather thoroughly.
Rinse well.
Follow with your appropriate conditioner, treatment or mask.

OLAPLEX's current general product instructions recommend weekly/as-needed use, while its UK guidance describes approximately once every 1–2 weeks as an alternative to your normal shampoo.

Aqua (Water, Eau), Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Hydroxysultaine, Sodium Lauroyl Glutamate, Coco-Betaine, Sodium Chloride, Disodium Laureth Sulfosuccinate, Cocamidopropylamine Oxide, Acrylates Copolymer, Cocamidopropyl Betaine, Decyl Glucoside, Sodium Methyl Isethionate, Bis-Aminopropyl Diglycol Dimaleate, Lauric Acid, Panthenol, Arginine, Polyquaternium-11, Glycine, Alanine, Serine, Valine, Proline, Threonine, Isoleucine, Histidine, Phenylalanine, Aspartic Acid, PCA, Coco-Glucoside, Lauryl Glucoside, Sodium Lauryl Sulfoacetate, Sodium Methyl Oleoyl Taurate, Ethylhexylglycerin, Sodium PCA, Glycerin, Sodium Sulfate, Laureth-10, Sodium Laurate, Tetrasodium Glutamate Diacetate, Trisodium Ethylenediamine Disuccinate, Caprylyl Glycol, Sodium Lactate, Phenoxyethanol, Sodium Benzoate, Benzoic Acid, Chlorphenesin, Citric Acid, Parfum (Fragrance), Citral, Citrus Aurantium Peel Oil, Hexyl Cinnamal, Limonene, Menthol, CI 19140 (Yellow 5), CI 15985 (Yellow 6).