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Olaplex
Nº.4 BOND MAINTENANCE® SHAMPOO
A highly concentrated shampoo for medium-coarse hair that repairs everyday damage to strengthen, reinforce, nourish, and boost shine in 1 wash.
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Olaplex
$34.00
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Lowest price: $34.00 — prices may vary. Click to see current price at retailer.
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Ingredients
Ingredients Gentle Blend of Coconut Oil-Derived Surfactants Provides an easy, abundant lather that leaves the scalp and hair feeling hydrated. FREE OF: Sulfates, SLS/SLES, Phthalates, MIC/MIT, Parabens. 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
Product intelligence
✓ Best for
Your medium-coarse hair benefits from this shampoo if you experience everyday breakage, dullness, or color-treated damage. It's ideal if you want bond-repair technology that cleanses without stripping while adding shine and hydration in a single wash.
✕ Not ideal for
Avoid if you have fine or thin hair, as the formula is specifically concentrated for medium-coarse textures and may weigh finer strands down.
♥ What people love
Users consistently praise the rich, luxurious lather, noticeable shine boost, and how soft their hair feels after just one wash. Many love that it's sulfate-free yet still cleanses effectively without feeling stripped.
⚠ Common complaints
The main criticism is the premium price point, which may feel steep for a shampoo, though fans argue the concentration and results justify the cost.
🧪 Key ingredients explained
Olaplex's proprietary Bond-Maintenance Complex (Bis-Aminopropyl Diglycol Dimaleate) is the hero ingredient—it repairs broken disulfide bonds in hair caused by heat, coloring, and mechanical damage, restoring strength from within. The formula also features a gentle coconut oil-derived surfactant blend instead of harsh sulfates, paired with silicones (Amodimethicone, Divinyldimethicone) and conditioning polymers (Polyquaternium-10, -11) that seal the cuticle, lock in moisture, and amplify shine without buildup.
