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Nº.4CURL BOND SHAPER™ HYDRATING CURL SHAMPOO

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Olaplex Nº.4CURL Bond Shaper Hydrating Curl Shampoo 250ml bottle on a plain white background
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Olaplex Nº.4CURL Bond Shaper Hydrating Curl Shampoo 100ml bottle on a plain white background
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Four women with diverse curly and coiled hair textures posing together. Text reads: INSTANTLY STRONG, INFINITELY DEFINED, 7-DAY HYDRATED CURLS. A footnote at the bottom adds: When Nº. 4CURL and Nº. 5CURL are used as a system.
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hover Olaplex Nº.4CURL Bond Shaper Hydrating Curl Shampoo texture shot. Clear gel like goop on a gray background
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Close-up of a model with curly hair next to a list of clinical claims for OLAPLEX Nº.4CURL. Text: 1 Wash. No Compromises. Clinically Proven: Stronger hair and less breakage in 1 use; Defined curl pattern in 1 use; 7 days of hydrated curls instantly; 50% less frizz, even in high humidity; 96% agree hair was easier to detangle. Footnote mentions results based on use as a system and a 2-week consumer study.
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Graphic titled 'Patented 3D Bond Shaper™ Technology.' Text explains that it builds disulfide bonds from 6 points in multiple directions to repair, rebuild, and define coils, curls, and waves from cortex to cuticle. A 3D illustration shows a hair strand being repaired by molecules.
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Graphic for Hydra-Define Technology. Text reads: Seals the cuticle to lock in hydration and block out damage and frizz. The image features a 3D illustration of a coiled hair strand with a protective tiled texture representing the sealed cuticle. Includes the Patented OLAPLEX Bond Technology logo.
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A model with long, curly hair washing with Nº.4CURL BOND SHAPER™ shampoo to show a rich lather. Text highlights: A Cooling Cleanse with a silky, creme-gel texture that creates a hydrating, non-stripping lather with high-slip; and a refreshing mint scent that invigorates.
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Formulation safety and 'Free Of' list for OLAPLEX. Text: Trichologist Approved. Stylist & Dermatologist Tested. Free of Protein, Silicones, Sulfates, SLS/SLES, Phthalates, Phosphates, MIC/MIT, and Paraben. Always: Trichologist Approved, Dermatologist Tested, Tested on Coils and Curls, Color Safe, and Suitable for Chemically Treated Hair. Bottom shows a close-up of a white, creamy product texture
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OLAPLEX Nº.4CURL Shampoo and Nº.5CURL Conditioner in a water splash. Text highlights the routine as the No-Compromise Curl Routine for strengthening, defining, hydrating, and smoothing curls.
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Infographic titled 'The Curl Transformation Routine' showing three steps with products. Step 1: Repair and Soften using No.3Plus Complete Repair Treatment. Step 2: Strengthen and Define using No.4CURL Bond Shaper Hydrating Curl Shampoo. Step 3: Hydrate and Smooth using No.5CURL Bond Shaper Hydrating Curl Conditioner. The bottles are shown resting in soapy bubbles.
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Scientific comparison titled 'Instant & Lasting Results For Curly Hair' showing three SEM (Scanning Electron Microscope) images of a hair cuticle. 'Before' shows a lifted, damaged cuticle. 'After 1 Wash' shows a smoothed cuticle locking in hydration. '7 Days After 1 Wash' shows the cuticle remains smooth for lasting hydration.
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Split-screen before and after image of a model's curly hair. The left side shows frizzy, dry hair, while the right side shows defined, hydrated curls. Disclaimer notes results are from using the full Olaplex curl system and drying with a diffuser.
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Before and after comparison of curly hair results. The 'Before' side shows hair with frizz and undefined texture. The 'After' side shows highly defined, shiny, and frizz-free curls. Text at the bottom states: Unretouched images. Results achieved by treating hair with Nº.3PLUS, cleansing with Nº.4CURL Shampoo, conditioning with Nº.5CURL Conditioner, then drying with a diffuser.
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Before and after comparison of curly hair with blonde highlights. The 'Before' side shows dry, frizzy, and undefined hair. The 'After' side shows significant curl definition, shine, and reduced frizz. Text at the bottom: UNRETOUCHED IMAGES. Results achieved by cleansing with Nº.4CURL Shampoo, conditioning with Nº.5CURL Conditioner, then drying with a diffuser.
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Scientific comparison titled 'Instant & Lasting Results For Coily Hair' showing three microscope images of a coily hair cuticle. 'Before' shows a lifted, damaged cuticle. 'After 1 Wash' shows a smoothed cuticle that locks in hydration. '7 Days After 1 Wash' shows the cuticle remains smooth for lasting hydration
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Before and after back-view comparison of coily hair. The 'Before' side shows hair that is less defined with visible frizz. The 'After' side shows highly defined, voluminous, and hydrated coils. Text at the bottom: UNRETOUCHED IMAGES. Results achieved by treating with Nº.3PLUS, cleansing with Nº.4CURL, and conditioning with Nº.5CURL, followed by diffuser drying.
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Before and after back-view comparison of coily hair. The 'Before' side shows a less defined, soft texture. The 'After' side shows significantly more defined, hydrated, and structured coils. Text at the bottom: UNRETOUCHED IMAGES. Results achieved by cleansing with Nº.4CURL Shampoo, conditioning with Nº.5CURL Conditioner, then drying with a diffuser.
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Comparison chart for OLAPLEX shampoo and conditioner formulas. It compares Nº.4FINE & Nº.5FINE (for fine to medium hair), Nº.4 & Nº.5 (for medium to coarse hair), and Nº.4CURL & Nº.5CURL (for coils, curls, and waves). The Nº.4CURL line is highlighted for defining and hydrating, with the highest hydration level of 5 out of 5 dots.
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Product guide titled 'Define Coils, Curls & Waves With Nº.10.' Three products are shown with their benefits: Nº.4CURL (Strengthen + Define), Nº.5CURL (Hydrate + Smooth), and the new Nº.10 Bond Shaper Curl Defining Gel (Define + Medium Hold). Includes the patented bond technology logo.
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Olaplex Nº.4CURL Bond Shaper Hydrating Curl Shampoo 250ml bottle on a plain white background Olaplex Nº.4CURL Bond Shaper Hydrating Curl Shampoo 100ml bottle on a plain white background
Four women with diverse curly and coiled hair textures posing together. Text reads: INSTANTLY STRONG, INFINITELY DEFINED, 7-DAY HYDRATED CURLS. A footnote at the bottom adds: When Nº. 4CURL and Nº. 5CURL are used as a system.
hover Olaplex Nº.4CURL Bond Shaper Hydrating Curl Shampoo texture shot. Clear gel like goop on a gray background
Close-up of a model with curly hair next to a list of clinical claims for OLAPLEX Nº.4CURL. Text: 1 Wash. No Compromises. Clinically Proven: Stronger hair and less breakage in 1 use; Defined curl pattern in 1 use; 7 days of hydrated curls instantly; 50% less frizz, even in high humidity; 96% agree hair was easier to detangle. Footnote mentions results based on use as a system and a 2-week consumer study.
Graphic titled 'Patented 3D Bond Shaper™ Technology.' Text explains that it builds disulfide bonds from 6 points in multiple directions to repair, rebuild, and define coils, curls, and waves from cortex to cuticle. A 3D illustration shows a hair strand being repaired by molecules.
Graphic for Hydra-Define Technology. Text reads: Seals the cuticle to lock in hydration and block out damage and frizz. The image features a 3D illustration of a coiled hair strand with a protective tiled texture representing the sealed cuticle. Includes the Patented OLAPLEX Bond Technology logo.
A model with long, curly hair washing with Nº.4CURL BOND SHAPER™ shampoo to show a rich lather. Text highlights: A Cooling Cleanse with a silky, creme-gel texture that creates a hydrating, non-stripping lather with high-slip; and a refreshing mint scent that invigorates.
Formulation safety and 'Free Of' list for OLAPLEX. Text: Trichologist Approved. Stylist & Dermatologist Tested. Free of Protein, Silicones, Sulfates, SLS/SLES, Phthalates, Phosphates, MIC/MIT, and Paraben. Always: Trichologist Approved, Dermatologist Tested, Tested on Coils and Curls, Color Safe, and Suitable for Chemically Treated Hair. Bottom shows a close-up of a white, creamy product texture
OLAPLEX Nº.4CURL Shampoo and Nº.5CURL Conditioner in a water splash. Text highlights the routine as the No-Compromise Curl Routine for strengthening, defining, hydrating, and smoothing curls.
Infographic titled 'The Curl Transformation Routine' showing three steps with products. Step 1: Repair and Soften using No.3Plus Complete Repair Treatment. Step 2: Strengthen and Define using No.4CURL Bond Shaper Hydrating Curl Shampoo. Step 3: Hydrate and Smooth using No.5CURL Bond Shaper Hydrating Curl Conditioner. The bottles are shown resting in soapy bubbles.
Scientific comparison titled 'Instant & Lasting Results For Curly Hair' showing three SEM (Scanning Electron Microscope) images of a hair cuticle. 'Before' shows a lifted, damaged cuticle. 'After 1 Wash' shows a smoothed cuticle locking in hydration. '7 Days After 1 Wash' shows the cuticle remains smooth for lasting hydration.
Split-screen before and after image of a model's curly hair. The left side shows frizzy, dry hair, while the right side shows defined, hydrated curls. Disclaimer notes results are from using the full Olaplex curl system and drying with a diffuser.
Before and after comparison of curly hair results. The 'Before' side shows hair with frizz and undefined texture. The 'After' side shows highly defined, shiny, and frizz-free curls. Text at the bottom states: Unretouched images. Results achieved by treating hair with Nº.3PLUS, cleansing with Nº.4CURL Shampoo, conditioning with Nº.5CURL Conditioner, then drying with a diffuser.
Before and after comparison of curly hair with blonde highlights. The 'Before' side shows dry, frizzy, and undefined hair. The 'After' side shows significant curl definition, shine, and reduced frizz. Text at the bottom: UNRETOUCHED IMAGES. Results achieved by cleansing with Nº.4CURL Shampoo, conditioning with Nº.5CURL Conditioner, then drying with a diffuser.
Scientific comparison titled 'Instant & Lasting Results For Coily Hair' showing three microscope images of a coily hair cuticle. 'Before' shows a lifted, damaged cuticle. 'After 1 Wash' shows a smoothed cuticle that locks in hydration. '7 Days After 1 Wash' shows the cuticle remains smooth for lasting hydration
Before and after back-view comparison of coily hair. The 'Before' side shows hair that is less defined with visible frizz. The 'After' side shows highly defined, voluminous, and hydrated coils. Text at the bottom: UNRETOUCHED IMAGES. Results achieved by treating with Nº.3PLUS, cleansing with Nº.4CURL, and conditioning with Nº.5CURL, followed by diffuser drying.
Before and after back-view comparison of coily hair. The 'Before' side shows a less defined, soft texture. The 'After' side shows significantly more defined, hydrated, and structured coils. Text at the bottom: UNRETOUCHED IMAGES. Results achieved by cleansing with Nº.4CURL Shampoo, conditioning with Nº.5CURL Conditioner, then drying with a diffuser.
Comparison chart for OLAPLEX shampoo and conditioner formulas. It compares Nº.4FINE & Nº.5FINE (for fine to medium hair), Nº.4 & Nº.5 (for medium to coarse hair), and Nº.4CURL & Nº.5CURL (for coils, curls, and waves). The Nº.4CURL line is highlighted for defining and hydrating, with the highest hydration level of 5 out of 5 dots.
Product guide titled 'Define Coils, Curls & Waves With Nº.10.' Three products are shown with their benefits: Nº.4CURL (Strengthen + Define), Nº.5CURL (Hydrate + Smooth), and the new Nº.10 Bond Shaper Curl Defining Gel (Define + Medium Hold). Includes the patented bond technology logo.

New

A multi-action shampoo for stronger, defined, and more hydrated coils, curls, and waves in one use.

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Key Benefits

  • Instantly Strong
  • Infinitely Defined
  • 7-Day Hydration
  • Reduces breakage and protects length
  • Cuts frizz in half, even in high humidity
  • Instantly easier detangling and static control
  • Dermatologist tested, vegan, color-safe, and suitable for chemically treated hair.

Powerful Results

*When Nº.4CURL BOND SHAPER™ HYDRATING CURL SHAMPOO & *Nº.5CURL BOND SHAPER™ HYDRATING CURL CONDITIONER are used as a system

Powerful Results

**Based on a 2-week 75-person consumer study.

Results With One Use

BEFORE BEFORE AFTER AFTER

UNRETOUCHED IMAGES*

*Results may vary.

*Results may vary. Results achieved by treating hair with Nº.3PLUS Complete Repair Treatment, cleansing with Nº.4Curl Bond Shaper™ Hydrating Curl Shampoo, conditioning with Nº.5Curl Bond Shaper™ Hydrating Curl Conditioner, then drying with a diffuser. 
  • Protein & Sulfate-Free
  • Protein & Sulfate-Free

1 Wash. No Compromises.

CLINICALLY PROVEN

  • 7 Days
    Of Hydrated
    Curls Instantly

  • *When Nº.4CURL BOND SHAPER™ HYDRATING CURL SHAMPOO & Nº.5CURL BOND SHAPER™ HYDRATING CURL CONDITIONER are used as a system
    50%
    Less Frizz, Even
    In High Humidity*

  • **Tested on bleached curly hair for damage reduction.
    96%
    Agree Hair Was
    Easier To Detangle**

Instantly Strong,
Infinitely Defined,
7-Day Hydrated Curls

Our Technology

Frequently Asked Questions