Olaplex No.4 Fine Bond Maintenance Shampoo is an ultra-light volumizing shampoo specifically formulated for fine hair. It uses Olaplex's patented bond-building technology to help strengthen, repair, and prevent future damage with every wash, leaving hair feeling lighter and more manageable without weighing it down.

This 1000 mL (33.8 fl oz) pump bottle is designed for daily maintenance. Key active ingredients include Bis-Aminopropyl Diglycol Dimaleate (Olaplex's signature bond-builder), Panthenol, Hydrolyzed Quinoa, Oryza Sativa (Rice) Bran Extract, Pisum Sativum (Pea) Seed Extract, Sodium Hyaluronate, and Rosemary Leaf Extract to support volume, moisture balance, and scalp health.

Full ingredients: Aqua/Water/Eau, Sodium Cocoyl Alaninate, Sodium Cocoyl Isethionate, Coco-Glucoside, Lauryl Glucoside, Propanediol, Cocamidopropyl Hydroxysultaine, Glycerin, Acrylates Copolymer, Polyquaternium-80, Bis-Aminopropyl Diglycol Dimaleate, Phenoxyethanol, Sodium Chloride, Parfum/Fragrance, Coconut Acid, Cocamide MIPA, Guar Hydroxypropyltrimonium Chloride, Polyglyceryl-4 Caprate, Polyglyceryl-6 Caprylate, Polyimide-1, Chlorphenesin, Panthenol, Xanthan Gum, Polyquaternium-7, Cetrimonium Chloride, Ethylhexylglycerin, Oryza Sativa (Rice) Bran Extract, Hydrolyzed Quinoa, Trisodium Ethylenediamine Disuccinate, Sarcosine, Pisum Sativum (Pea) Seed Extract, Helianthus Annuus (Sunflower) Extract, Propylene Glycol, Sclerotium Gum, 1,2-Hexanediol, Rosmarinus Officinalis (Rosemary) Leaf Extract, Tocopherol, Sodium Hydroxide, Algin, Sodium Hyaluronate, Sodium Benzoate, Benzyl Alcohol, Tetrasodium Glutamate Diacetate, Potassium Sorbate, Caesalpinia Spinosa Fruit Extract, Helianthus Annuus (Sunflower) Sprout Extract, Citric Acid, Hexyl Cinnamal, Limonene, Citral, Yellow 5 (CI 19140), Yellow 6 (CI 15985).