Olaplex Nº.4 Bond Maintenance Shampoo 100 mL — Color-Safe, Reduces Breakage & Hydrates

Olaplex Nº.4 Bond Maintenance Shampoo is a concentrated, color-safe cleanser formulated to reduce breakage and leave hair smoother, shinier, and more manageable after every wash.

Designed as part of the Olaplex bond-building system, Nº.4 gently cleanses all hair textures without stripping moisture. Its coconut oil–derived surfactant blend produces a rich lather that removes dirt and product buildup while supporting hydration and slip, so detangling and styling are easier. Use it alone or alongside Nº.3 and Nº.5 for optimized conditioning and breakage reduction.

How does this shampoo reduce breakage and strengthen hair?

Nº.4 is formulated to support hair integrity by cleansing without aggressive surfactants and by working with Olaplex’s bond-building technology when used in a system. While a single product won’t alter genetics, regular use helps hair feel stronger and resist mechanical damage from brushing and styling.

• Concentrated formula minimizes overwashing, preserving natural oils.
• Gentle coconut-derived surfactants create slip for easier detangling.
• Clinically observed improvements when combined with Nº.3 and Nº.5.

Will this shampoo work on colored, curly, or coarse hair?

Nº.4 is color-safe and suitable for coily, curly, wavy, and straight hair types. It cleanses without fading salon color and supplies hydration and smoothing benefits that help manage frizz and define texture across hair types.

• Color-safe formulation protects dyed hair tones.
• Hydrating surfactants reduce moisture loss on coarse textures.
• Detangling slip helps preserve curl pattern and reduce breakage.

How should I use Nº.4 for best results?

Apply to wet hair, massage to a rich lather, then rinse thoroughly. For deeper strength and conditioning, follow with Olaplex Nº.5 and use Nº.3 as an at-home treatment prior to washing on a weekly or as-needed basis.

• Use a coin-sized amount for short hair; increase for longer lengths.
• Massage into scalp to lift impurities without over-stripping ends.
• Pair with Nº.3 and Nº.5 for system-level benefits and reduced breakage.

What results can I expect and how quickly?

Many users notice smoother, shinier hair and easier detangling after the first few washes; measurable reduction in breakage has been reported in clinical settings when Nº.4 is used with the recommended Olaplex regimen. Individual results vary with hair condition and styling habits.

• Immediate: improved slip, shinier appearance, easier comb-through.
• Short term: cleaner, hydrated scalp and reduced surface frizz.
• With ongoing use in a system: clinically observed decline in breakage.

Who is this for: Olaplex Nº.4 Bond Maintenance Shampoo suits anyone seeking a salon-grade, color-safe cleanser that prioritizes hair strength and manageability. It’s a good choice for people with chemically treated, heat-styled, textured, or naturally fragile hair who want gentler cleansing plus improved detangling and shine. If you frequently color, heat-style, or struggle with breakage and knotting, this concentrated 100 mL size is convenient for testing the routine or travel without compromising performance.

Ingredients

Water/Aqua/Eau, Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Hydroxysultaine, Potassium Cocoyl Glycinate, Disodium Cocoyl Glutamate, Sodium Lauroyl Sarcosinate, Potassium Cocoate, Decyl Glucoside, Glycereth-26, Bis-Aminopropyl Diglycol Dimaleate, Cocamidopropylamine Oxide, Disodium Laureth Sulfosuccinate, Glycol Distearate, Sodium Cocoyl Glutamate, Methyl Gluceth-20, Acrylates Copolymer, PEG-120 Methyl Glucose Dioleate, Amodimethicone, Citric Acid, Sodium Lauryl Sulfoacetate, Polyquaternium-10, Ethylhexylglycerin, Divinyldimethicone/Dimethicone Copolymer, Polyquaternium-11, Trisodium Ethylenediamine Disuccinate, Guar Hydroxypropyltrimonium Chloride, C11-15 Alketh-7, Laureth-9, Glycerin, Trideceth-12, C12-13 Alketh-23, C12-13 Alketh-3, Panthenol, Acetic Acid, Hydrolyzed Vegetable Protein PG-Propyl Silanetriol, Pentasodium Triphosphate, Glyoxal, Sodium Hydroxide, Helianthus Annuus (Sunflower) Seed Oil, Disodium EDTA, Tocopherol, Prunus Armeniaca (Apricot) Kernel Oil, Pseudozyma Epicola/Argania Spinosa Kernel Oil Ferment Filtrate, Pseudozyma Epicola/Camellia Sinensis Seed Oil Ferment Extract Filtrate, Quaternium-95, Propanediol, Helianthus Annuus (Sunflower) Seed Extract, PEG-8, Euterpe Oleracea Fruit Extract, Punica Granatum Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Musa Sapientum (Banana) Fruit Extract, Origanum Vulgare Leaf Extract, Morinda Citrifolia Fruit Extract, Arctium Lappa Root Extract, PEG-8/SMDI Copolymer, Sodium Hyaluronate, Palmitoyl Myristyl Serinate, Sodium Polyacrylate, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Biotin, Phenoxyethanol, Chlorphenesin, Benzoic Acid, Potassium Sorbate, Sodium Benzoate, Fragrance (Parfum), Hexyl Cinnamal, Limonene, Citral