Olaplex No.4 Bond Maintenance Strengthening Shampoo — 100 mL, color-safe & bond-repairing

Olaplex No.4 Bond Maintenance Strengthening Shampoo is a concentrated, color-safe cleanser that repairs and fortifies hair to reduce breakage and leave strands smoother and shinier.

Designed to work with the rest of the Olaplex system, this 100 mL shampoo gently lifts dirt, oil, and styling residue while protecting the hair’s internal structure. The sulfate-free, coconut-derived surfactant blend produces a rich lather that cleans without stripping moisture, making it suitable for treated, textured, or natural hair. Use with No.5 for best daily results or pair with No.3 when targeting repair.

How does No.4 help prevent breakage during washing?

No.4 supports hair resilience by reinforcing weakened bonds so hair withstands brushing, styling, and daily handling more effectively. It cleans the scalp and strands while leaving a hydrated slip that reduces friction and tangling.

• Formulated to strengthen bonds that contribute to breakage reduction.
• Creates slip for easier detangling and less mechanical damage.
• Non-drying surfactants maintain moisture balance during cleansing.

Will it keep my color vibrant and prevent fading?

This shampoo is color-safe and formulated to gently cleanse without stripping dye molecules, helping maintain tone and vibrancy between salon visits. Its mild surfactants remove product buildup that can dull color while preserving moisture to reduce color fade caused by dryness.

• Color-safe formula that avoids harsh sulfates known to strip dyes.
• Removes buildup that mutes shine and color intensity.
• Supports a hydrated strand surface for better light reflection and gloss.

How should I use No.4 for best results on different hair types?

Apply a small amount to wet hair, lather, and rinse; repeat if needed. For optimal repair and daily maintenance, pair No.4 with Olaplex No.5 conditioner or use No.3 treatment weekly for intensive bond rebuilding.

• Fine hair: use a small dose to avoid weighing hair down.
• Thick or textured hair: apply generously, focus on roots and mid-lengths.
• Color-treated hair: use regularly to preserve tone and shine.

What ingredients make this shampoo gentle yet effective?

No.4 relies on a gentle blend of coconut oil–derived surfactants that create a plush lather while protecting the hair’s moisture. The formula is designed to clean thoroughly without stripping, and it contains Olaplex’s bond-building technology to nourish and strengthen strands.

• Coconut-derived surfactants for abundant but mild lather.
• Bond-maintenance technology to support hair integrity.
• Hydrating profile to preserve scalp and strand moisture.

Who is this for: Olaplex No.4 is suited to anyone looking to protect and strengthen hair during regular washes — from color-treated and chemically processed hair to naturally textured and everyday styles. It’s ideal for users wanting a salon-grade, gentle cleanser that reduces breakage, improves manageability, and enhances shine when used alone or as part of the Olaplex routine.

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