Olaplex Nº.4 FINE Bond Maintenance Shampoo — 250 mL Volumizing, Strengthening for Fine Hair

Olaplex Nº.4 FINE Bond Maintenance Shampoo is an ultra-light, volumizing cleanser designed to strengthen and gently lift fine hair without weighing it down.

Formulated specifically for fine and fragile strands, this shampoo uses Olaplex’s Bond Maintenance technology plus lightweight polymers and low-molecular-weight hyaluronic acid to cleanse, add body, and improve manageability. It targets buildup and signs of mechanical or chemical stress while preserving softness and avoiding heavy residue, making it suitable for coily, curly, straight, and wavy textures that need lift and resilience.

How does Nº.4 FINE add volume without drying hair out?

Nº.4 FINE combines flexible volumizing polymers with a hydra-balancing matrix and low-molecular-weight hyaluronic acid to provide root lift and manageability while maintaining hydration. The formula is engineered to leave hair feeling light, not stiff, so volume lasts without flaking or crunchiness.

• Flexible polymers for lift and long-lasting body
• Hyaluronic acid to hydrate without heaviness
• Hydra-balancing matrix prevents over-conditioning

Will this shampoo help strengthen and repair damaged fine hair?

When used as part of the Olaplex Bond Maintenance regimen, Nº.4 FINE is clinically proven to reduce breakage and improve hair strength by supporting the hair’s internal bonds. It works gently during washing to remove impurities while contributing to repair and improved elasticity over time.

• Bond Maintenance technology supports weakened bonds
• Clinically tested to reduce breakage and increase strength when paired with No.5FINE
• Formulated for everyday use after styling or salon services

Is this shampoo suitable for colored or chemically treated fine hair?

Yes — Nº.4 FINE is formulated to be gentle on color-treated and chemically processed fine hair. It removes buildup from styling products and environmental residue without stripping color or moisture when used as directed.

• Non-stripping cleansing system preserves color vibrancy
• Designed for bleached, colored, and chemically treated fine hair
• Pairs with No.5FINE conditioner for optimal repair and protection

How should I use Olaplex Nº.4 FINE to get the best results?

Apply a small amount to wet hair, lather, and rinse thoroughly; repeat if needed. For full bond-support benefits and maximum volume with reduced breakage, follow with No.5FINE Bond Maintenance Conditioner and use regularly as part of your wash-day routine.

• Use on wet hair, massage into scalp and lengths, then rinse
• Follow with No.5FINE for enhanced repair and hydration
• Ideal for daily or frequent washes when hair feels weighed down

Who is this for: Olaplex Nº.4 FINE Bond Maintenance Shampoo is aimed at people with fine or thinning hair who want noticeable lift, improved strength, and gentle cleansing. It’s well suited to anyone with coily, curly, straight, or wavy fine hair — including color-treated and chemically processed strands — who needs lightweight hydration, reduced breakage, and lasting body without residue.

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)."