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by one sii

by one sii Hair Booster Treatment 290g

Regular price
$84.02 NZD
Regular price
Sale price
$84.02 NZD
Shipping calculated at checkout.

Product Overview

by one sii Hair Booster Treatment 290g is a premium hair mask designed to enhance your hair care routine. Perfect for those seeking effective Japanese hair care solutions, this treatment helps maintain healthy, vibrant hair.

Key Benefits

  • Delivers intense moisture and hydration to dry hair
  • Leaves hair soft, shiny, and manageable
  • Helps reduce tangling and frizz for a smooth finish
  • Ideal for all hair types, including color-treated hair

How to Use

After shampooing, apply a generous amount to damp hair, focusing on the ends. Leave it on for 5-10 minutes for best results, then rinse thoroughly. Use 1-2 times a week for optimal hydration.

Who Is It For

  • Individuals with dry or damaged hair
  • Those with color-treated hair needing extra care
  • People looking to reduce frizz and improve manageability
  • Everyday hair care users seeking hydration

FAQ

Q: How does this product differ from a regular shampoo?
A: This is a deep conditioning treatment designed to provide intense hydration, while shampoo cleanses the hair.

    by one sii Hair Booster Treatment 290g
    by one sii Hair Booster Treatment 290g
    by one sii Hair Booster Treatment 290g
    by one sii Hair Booster Treatment 290g
    by one sii Hair Booster Treatment 290g
    by one sii Hair Booster Treatment 290g
    by one sii Hair Booster Treatment 290g
    by one sii Hair Booster Treatment 290g
    by one sii Hair Booster Treatment 290g

    Ranking

    Ranking

    • 1
      DHC Q10 Premium Color Treatment 235g [Black Brown]
      $54.80 NZD

      2
      syoss Color Treatment Dark Brown 180g x 2 + Bonus Item
      $50.24 NZD

      3
      Dove Creamy Scrub Dojima Roll 298g
      $42.50 NZD
      4
      DHC Q10 Premium Color Treatment, Dark Brown 235g
      $48.72 NZD

      5
      kumanoyushi Shiki Oriori Medicated Persimmon Tannin Soap 3-Pack
      $25.23 NZD
      6
      SHISEIDO Adenovital Advanced Scalp Essence 180mL
      $147.44 NZD
      7
      DHC Q10 Premium Color Treatment, Black 235g
      $57.11 NZD

      8
      Kakishibu Medicated Persimmon Tannin Soap 100g
      $20.50 NZD
    • 1
      DHC Q10 Premium Color Treatment 235g [Black Brown]
      $54.80 NZD

      2
      syoss Color Treatment Dark Brown 180g x 2 + Bonus Item
      $50.24 NZD

      3
      DHC Q10 Premium Color Treatment, Dark Brown 235g
      $48.72 NZD

      4
      SHISEIDO Adenovital Advanced Scalp Essence 180mL
      $147.44 NZD
      5
      DHC Q10 Premium Color Treatment, Black 235g
      $57.11 NZD

      6
      syoss Color Treatment Dark Brown 180g
      $28.42 NZD
      7
      syoss Color Treatment Dark Brown 180g with Bonus Item
      $33.51 NZD

      8
      DHC Premium Color Treatment SS Black 150g, 1 Count
      $37.18 NZD
    • 1
      syoss Color Treatment Dark Brown 180g with Bonus Item
      $33.51 NZD

      2
      Kaminomoto Haarwasser Hair Lotion 360ml
      $56.69 NZD
      3
      L'OCCITANE Citrus Verbena Ice Conditioner 250mL
      $72.86 NZD
      4
      STEPHEN KNOLL Deep Renew Rinse-Out Treatment Mask for Damaged Hair 260g
      $50.48 NZD
      5
      TOKIO IE Inkarami Platinum Treatment Refill 700g
      $146.33 NZD
      6
      M-mark Amino Acid Silky Conditioner 380ml
      $35.04 NZD
      7
      Sastty Rishiri Hair Color Care Conditioner (Color Shampoo Use) 200ml
      $72.33 NZD
      8
      TOKIO IE Inkarami Premium Treatment 400g
      $103.94 NZD
    • 1
      syoss Color Treatment Dark Brown 180g with Bonus Item
      $33.51 NZD

      2
      MUJI Essential Oil Scent Shampoo, Hinoki & Lavender 400mL OAR32A4A
      $49.68 NZD
      3
      OTEKI White Purple Color Shampoo, Yellow-Tone Reducing (White Shampoo) 200ml
      $73.65 NZD
      4
      FIOLE Qualucia Color Shampoo Ash 250ml
      $42.47 NZD
      5
      MILBON Indulging Hydration Shampoo 1000mL (Refill)
      $198.65 NZD
      6
      Pantene Miracles Moisture & Power Repair Shampoo & Treatment Pump Set 440g+440g
      $71.09 NZD
      7
      Kaminomoto Haarwasser Hair Lotion 360ml
      $56.69 NZD
      8
      L'OCCITANE Citrus Verbena Ice Conditioner 250mL
      $72.86 NZD
    • 1
      DHC Q10 Premium Color Treatment 235g [Black Brown]
      $54.80 NZD

      2
      syoss Color Treatment Dark Brown 180g x 2 + Bonus Item
      $50.24 NZD

      3
      Dove Creamy Scrub Dojima Roll 298g
      $42.50 NZD
      4
      DHC Q10 Premium Color Treatment, Dark Brown 235g
      $48.72 NZD

      5
      kumanoyushi Shiki Oriori Medicated Persimmon Tannin Soap 3-Pack
      $25.23 NZD
      6
      DHC Q10 Premium Color Treatment, Black 235g
      $57.11 NZD

      7
      SHISEIDO Adenovital Advanced Scalp Essence 180mL
      $147.44 NZD
      8
      Kakishibu Medicated Persimmon Tannin Soap 100g
      $20.50 NZD
    • 1
      DHC Q10 Premium Color Treatment 235g [Black Brown]
      $54.80 NZD

      2
      syoss Color Treatment Dark Brown 180g x 2 + Bonus Item
      $50.24 NZD

      3
      DHC Q10 Premium Color Treatment, Dark Brown 235g
      $48.72 NZD

      4
      DHC Q10 Premium Color Treatment, Black 235g
      $57.11 NZD

      5
      SHISEIDO Adenovital Advanced Scalp Essence 180mL
      $147.44 NZD
      6
      syoss Color Treatment Dark Brown 180g
      $28.42 NZD
      7
      syoss Color Treatment Dark Brown 180g with Bonus Item
      $33.51 NZD

      8
      DHC Premium Color Treatment SS Black 150g, 1 Count
      $37.18 NZD
    • 1
      syoss Color Treatment Dark Brown 180g with Bonus Item
      $33.51 NZD

      2
      Kaminomoto Haarwasser Hair Lotion 360ml
      $56.69 NZD
      3
      STEPHEN KNOLL Deep Renew Rinse-Out Treatment Mask for Damaged Hair 260g
      $50.48 NZD
      4
      TOKIO IE Inkarami Platinum Treatment Refill 700g
      $146.33 NZD
      5
      TOKIO IE Inkarami Premium Treatment 400g
      $103.94 NZD
      6
      napla Imprime Smooth Treatment Alpha 200g
      $36.38 NZD
      7
      SHISEIDO Professional Sublimic Wonder Shield 125ml
      $76.15 NZD
      8
      SHISEIDO Professional Sublimic Adenovital Volume Serum 125ml
      $67.92 NZD
    • 1
      DHC Q10 Premium Color Treatment 235g [Black Brown]
      $54.80 NZD

      2
      syoss Color Treatment Dark Brown 180g x 2 + Bonus Item
      $50.24 NZD

      3
      Dove Creamy Scrub Dojima Roll 298g
      $42.50 NZD
      4
      DHC Q10 Premium Color Treatment, Dark Brown 235g
      $48.72 NZD

      5
      kumanoyushi Shiki Oriori Medicated Persimmon Tannin Soap 3-Pack
      $25.23 NZD
      6
      SHISEIDO Adenovital Advanced Scalp Essence 180mL
      $147.44 NZD
      7
      DHC Q10 Premium Color Treatment, Black 235g
      $57.11 NZD

      8
      Kakishibu Medicated Persimmon Tannin Soap 100g
      $20.50 NZD
    • 1
      DHC Q10 Premium Color Treatment 235g [Black Brown]
      $54.80 NZD

      2
      syoss Color Treatment Dark Brown 180g x 2 + Bonus Item
      $50.24 NZD

      3
      DHC Q10 Premium Color Treatment, Dark Brown 235g
      $48.72 NZD

      4
      SHISEIDO Adenovital Advanced Scalp Essence 180mL
      $147.44 NZD
      5
      DHC Q10 Premium Color Treatment, Black 235g
      $57.11 NZD

      6
      syoss Color Treatment Dark Brown 180g
      $28.42 NZD
      7
      syoss Color Treatment Dark Brown 180g with Bonus Item
      $33.51 NZD

      8
      DHC Premium Color Treatment SS Black 150g, 1 Count
      $37.18 NZD
    • 1
      syoss Color Treatment Dark Brown 180g with Bonus Item
      $33.51 NZD

      2
      Kaminomoto Haarwasser Hair Lotion 360ml
      $56.69 NZD
      3
      L'OCCITANE Citrus Verbena Ice Conditioner 250mL
      $72.86 NZD
      4
      STEPHEN KNOLL Deep Renew Rinse-Out Treatment Mask for Damaged Hair 260g
      $50.48 NZD
      5
      TOKIO IE Inkarami Platinum Treatment Refill 700g
      $146.33 NZD
      6
      M-mark Amino Acid Silky Conditioner 380ml
      $35.04 NZD
      7
      Sastty Rishiri Hair Color Care Conditioner (Color Shampoo Use) 200ml
      $72.33 NZD
      8
      TOKIO IE Inkarami Premium Treatment 400g
      $103.94 NZD
    • 1
      syoss Color Treatment Dark Brown 180g with Bonus Item
      $33.51 NZD

      2
      MUJI Essential Oil Scent Shampoo, Hinoki & Lavender 400mL OAR32A4A
      $49.68 NZD
      3
      OTEKI White Purple Color Shampoo, Yellow-Tone Reducing (White Shampoo) 200ml
      $73.65 NZD
      4
      FIOLE Qualucia Color Shampoo Ash 250ml
      $42.47 NZD
      5
      MILBON Indulging Hydration Shampoo 1000mL (Refill)
      $198.65 NZD
      6
      Pantene Miracles Moisture & Power Repair Shampoo & Treatment Pump Set 440g+440g
      $71.09 NZD
      7
      Kaminomoto Haarwasser Hair Lotion 360ml
      $56.69 NZD
      8
      L'OCCITANE Citrus Verbena Ice Conditioner 250mL
      $72.86 NZD
    • 1
      DHC Q10 Premium Color Treatment 235g [Black Brown]
      $54.80 NZD

      2
      syoss Color Treatment Dark Brown 180g x 2 + Bonus Item
      $50.24 NZD

      3
      Dove Creamy Scrub Dojima Roll 298g
      $42.50 NZD
      4
      DHC Q10 Premium Color Treatment, Dark Brown 235g
      $48.72 NZD

      5
      kumanoyushi Shiki Oriori Medicated Persimmon Tannin Soap 3-Pack
      $25.23 NZD
      6
      DHC Q10 Premium Color Treatment, Black 235g
      $57.11 NZD

      7
      SHISEIDO Adenovital Advanced Scalp Essence 180mL
      $147.44 NZD
      8
      Kakishibu Medicated Persimmon Tannin Soap 100g
      $20.50 NZD
    • 1
      DHC Q10 Premium Color Treatment 235g [Black Brown]
      $54.80 NZD

      2
      syoss Color Treatment Dark Brown 180g x 2 + Bonus Item
      $50.24 NZD

      3
      DHC Q10 Premium Color Treatment, Dark Brown 235g
      $48.72 NZD

      4
      DHC Q10 Premium Color Treatment, Black 235g
      $57.11 NZD

      5
      SHISEIDO Adenovital Advanced Scalp Essence 180mL
      $147.44 NZD
      6
      syoss Color Treatment Dark Brown 180g
      $28.42 NZD
      7
      syoss Color Treatment Dark Brown 180g with Bonus Item
      $33.51 NZD

      8
      DHC Premium Color Treatment SS Black 150g, 1 Count
      $37.18 NZD
    • 1
      syoss Color Treatment Dark Brown 180g with Bonus Item
      $33.51 NZD

      2
      Kaminomoto Haarwasser Hair Lotion 360ml
      $56.69 NZD
      3
      STEPHEN KNOLL Deep Renew Rinse-Out Treatment Mask for Damaged Hair 260g
      $50.48 NZD
      4
      TOKIO IE Inkarami Platinum Treatment Refill 700g
      $146.33 NZD
      5
      TOKIO IE Inkarami Premium Treatment 400g
      $103.94 NZD
      6
      napla Imprime Smooth Treatment Alpha 200g
      $36.38 NZD
      7
      SHISEIDO Professional Sublimic Wonder Shield 125ml
      $76.15 NZD
      8
      SHISEIDO Professional Sublimic Adenovital Volume Serum 125ml
      $67.92 NZD