Olaplex Nº.4 FINE Bond Maintenance Shampoo for Fine Hair — 100 mL Volumizing & Bond-Strengthening

Olaplex Nº.4 FINE is a lightweight volumizing shampoo that cleanses fine hair while helping rebuild and protect bonds for lifted, soft, resilient strands.

If your hair is fine and tends to fall flat, choosing a formula that both adds body and supports hair structure matters. Olaplex Nº.4 FINE Bond Maintenance Shampoo is engineered to remove buildup without heavy conditioning, delivering instant volume and measurable improvements in strength when paired with Olaplex No.5FINE conditioner. The result is hair that looks fuller and feels softer without grease or stiffness.

How does this shampoo create volume without weighing hair down?

Nº.4 FINE uses ultra-lightweight polymers and a hydra-balancing matrix designed to lift roots and keep strands separated rather than clumping. The texture rinses clean, so you get body and bounce without the residue that makes fine hair flat.

• Flexible polymers provide lift at the root for visible volume.
• Low molecular weight hyaluronic acid hydrates without heavy coating.
• Formulated to remove styling and environmental buildup for long-lasting body.

Will it actually strengthen and repair fragile or chemically treated hair?

Olaplex’s bond-supporting technology targets weakened connections inside the hair fiber to help reduce breakage and restore resilience. Clinical testing on bleached hair showed notable reductions in breakage and improvements in strength when used as part of the fine-hair system.

• Designed to help rebuild compromised bonds within the hair structure.
• Clinically shown to reduce breakage and increase strength on tested hair types.
• Works best when combined with Olaplex No.5FINE conditioner for full benefit.

Is this safe for different curl patterns and color-treated hair?

Nº.4 FINE is formulated for fine hair across textures—coily, curly, straight, and wavy—and is gentle enough for color-treated and chemically processed hair. It focuses on balanced cleansing and molecular hydration rather than stripping oils or harsh detergents.

• Suitable for coily, curly, straight, and wavy fine hair.
• Removes residue while helping preserve color and moisture balance.
• Non-stripping formula avoids drying out delicate strands.

How should I use it to get the best results?

Apply to wet hair, lather at roots, and gently work through to ends before rinsing; follow with No.5FINE conditioner for optimal repair and manageability. Regular use helps maintain volume and improves hair strength over time.

• Use daily or as needed to cleanse and refresh fine hair.
• Pair with No.5FINE for clinically tested repair and reduced breakage.
• Finish with styling suited for fine hair to preserve lift and texture.

Who this is for: Olaplex Nº.4 FINE Bond Maintenance Shampoo is intended for people with fine or thinning hair who want lightweight lift plus structural support—whether hair is natural, colored, or chemically treated. It fits routines focused on creating volume without sacrificing soft touch or long-term strength, and it pairs best with Olaplex No.5FINE for those seeking amplified repair results.

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).