Redken

Extreme Length Shampoo and Conditioner Duo 300ml

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$68.80
$86.00
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Free Click and collect is available at checkout. Orders are ready within 1 hour during opening hours. Store Address: 56 Parer Rd, Airport West, VIC Australia 3042 Phone (03) 9999 5902

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Why You’ll love it
Brittle Hair
Damaged
Gluten Free
Paraben Free
Formulated with biotin
Helps reduce breakage and split ends
Ideal for breakage-prone hair
Supports longer, stronger hair
Description
Read more
Directions
Ingredients
  • Sodium Laureth Sulfate Cleansers / surfactants
    Cleanser

    Helps cleanse the hair and scalp by removing oil, sweat and product build-up.

    May suit

    Oily scalps, heavy product users and people who like a strong cleanse.

    Worth knowing

    May feel too cleansing for some dry, curly, colour-treated or sensitive hair types. This depends on the full formula and your hair needs.

  • Disodium Cocoamphodiacetate Cleansers / surfactants
    Mild cleansing surfactant

    A gentle amphoteric surfactant used to cleanse while helping to reduce the harshness of stronger cleansers.

    May suit

    Those looking for mild, low-irritation cleansing in shampoos or co-washes.

    Worth knowing

    It is often combined with other surfactants to create a balanced, gentle lather. Its amphoteric nature helps support mildness in sulphate-free formulas.

  • Coco-Betaine Cleansers / surfactants
    Mild surfactant

    A mild, coconut-derived surfactant that helps cleanse and create a soft lather.

    May suit

    People looking for gentle cleansing that doesn't feel stripping.

    Worth knowing

    It is often used alongside other surfactants to improve foam quality and overall mildness. Common in shampoos designed for frequent use.

  • Glycol Distearate Thickeners and stabilisers
    Opacifier and pearlising agent

    Adds a pearlescent look and helps thicken and stabilise shampoos and conditioners.

    May suit

    Those who like creamy, luxurious-feeling shampoo or conditioner textures.

    Worth knowing

    It also provides a mild conditioning feel, helping formulas spread smoothly through the hair. Its use is common in many everyday cleansing products.

  • Glycerin Humectants
    Humectant

    Attracts and holds water to help hair feel hydrated and soft.

    May suit

    Dry or dehydrated hair, and many curl and moisture routines.

    Worth knowing

    A very common, well-tolerated humectant used across countless products.

  • Cocamide MIPA Cleansers / surfactants
    Foaming surfactant

    A coconut-derived surfactant that helps boost foam and improve the cleansing performance of shampoos.

    May suit

    People who like a rich, stable lather in their cleansing products.

    Worth knowing

    It is often used alongside primary surfactants to enhance texture and mildness. Its viscosity‑boosting effect can also improve the feel of rinse‑off formulas.

  • Biotin Anti-dandruff / scalp care
    Scalp-supporting vitamin

    Biotin is a B‑vitamin used in haircare to support the condition of the scalp and hair fibre.

    May suit

    Those looking for formulas that help maintain a healthy-feeling scalp or the appearance of stronger hair.

    Worth knowing

    In topical products it is used in small amounts to complement other strengthening or scalp-care ingredients. Its effects are supportive rather than dramatic on its own.

  • Citric Acid pH adjusters
    pH adjuster

    Fine-tunes the product pH, which can help the hair surface feel smooth.

    May suit

    Most hair types as part of a balanced formula.

    Worth knowing

    Usually present in small amounts to balance the formula.

  • Polyquaternium-10 Conditioning agents
    Conditioning agent

    A conditioning polymer that smooths the hair surface and helps with detangling and feel.

    May suit

    Most hair types wanting smoother, easier-to-manage hair.

    Worth knowing

    Widely used in shampoos and conditioners for slip and softness.

  • Sodium Hydroxide pH adjusters
    pH adjuster

    Helps control and stabilise the pH of haircare formulations.

    May suit

    Those interested in how product pH affects scalp comfort or hair cuticle behaviour.

    Worth knowing

    It is used in very small amounts to bring a formula to the desired pH range. Once adjusted, it does not act as a strong alkaline agent in the finished product.

  • Guar Hydroxypropyltrimonium Chloride Conditioning agents
    Conditioning polymer

    A conditioning polymer that helps smooth hair and improve slip.

    May suit

    Those looking for softer, easier-to-detangle hair.

    Worth knowing

    It is derived from guar gum and is commonly used to enhance conditioning in shampoos and conditioners. It can also reduce static and improve manageability.

  • Sodium Chloride Thickeners and stabilisers
    Viscosity adjuster

    Sodium Chloride is used to adjust the thickness of shampoos and other cleansing formulas.

    May suit

    Those interested in how a product’s texture and lather are achieved.

    Worth knowing

    It is a simple mineral salt that helps create a familiar shampoo feel and can influence how a cleanser spreads through the hair.

  • Salicylic Acid Exfoliating acids
    Scalp exfoliant

    Helps dissolve dead skin buildup on the scalp and supports a clearer, fresher surface.

    May suit

    People dealing with flaky scalps, congestion or product buildup.

    Worth knowing

    It is widely used in scalp-care formulas because it breaks down excess oils and debris without needing physical scrubbing. Often found in dandruff-control products.

  • Limonene Fragrance ingredients
    Fragrance component

    A fragrance component that also occurs naturally in many citrus and plant oils.

    Worth knowing

    A fragrance component that must be listed separately on labels because a minority of people can be sensitive to it. Its presence is normal, required disclosure and is not a quality signal.

  • Hexyl Cinnamal Fragrance ingredients
    Fragrance component

    A fragrance ingredient used to give products a light, floral scent.

    May suit

    Those who enjoy subtly scented haircare products.

    Worth knowing

    It is one of the fragrance components that must be listed separately when present above certain levels. People with known fragrance sensitivities may choose to monitor for it.

  • Linalool Fragrance ingredients
    Fragrance component

    A fragrance component found naturally in many flowers and spices.

    Worth knowing

    A fragrance component that must be listed separately on labels because a minority of people can be sensitive to it. Its presence is normal, required disclosure and is not a quality signal.

  • Benzyl Alcohol Preservatives
    Preservative

    Helps preserve formulations and can also act as a solvent or light fragrance component.

    May suit

    Those interested in understanding preservative systems or identifying potential fragrance allergens.

    Worth knowing

    Benzyl Alcohol is commonly used in professional haircare to support product stability and texture. It can also naturally occur in some essential oils.

  • Sodium Benzoate Preservatives
    Preservative

    Helps protect water-based products from spoilage so they stay usable.

    May suit

    All products that need a preservative system.

    Worth knowing

    Often paired with other preservatives for broad protection.

  • Cetearyl Alcohol Conditioning agents
    Fatty alcohol conditioner

    A fatty alcohol that helps soften hair and improve the texture of formulations.

    May suit

    People looking for smoother, more manageable hair or richer, creamier product textures.

    Worth knowing

    Despite the name, fatty alcohols are moisturising and conditioning rather than drying. They also help stabilise and thicken many haircare formulas.

  • Behentrimonium Chloride Conditioning agents
    Conditioning agent

    A conditioning agent that helps detangle and soften, reducing static and roughness.

    May suit

    Most hair types, especially tangle-prone or coarse hair.

    Worth knowing

    A common conditioner ingredient despite the chloride name, which simply describes its chemistry.

  • Cetyl Esters Conditioning agents
    Emollient / slip enhancer

    Provides slip and softness while helping to smooth the hair’s surface.

    May suit

    People looking for smoother, more manageable hair textures.

    Worth knowing

    Cetyl esters are wax‑like emollients that improve product spreadability and give a soft, conditioned feel. They are commonly used to enhance texture without heaviness.

  • Biotin Anti-dandruff / scalp care
    Scalp-supporting vitamin

    Biotin is a B‑vitamin used in haircare to support the condition of the scalp and hair fibre.

    May suit

    Those looking for formulas that help maintain a healthy-feeling scalp or the appearance of stronger hair.

    Worth knowing

    In topical products it is used in small amounts to complement other strengthening or scalp-care ingredients. Its effects are supportive rather than dramatic on its own.

  • Citric Acid pH adjusters
    pH adjuster

    Fine-tunes the product pH, which can help the hair surface feel smooth.

    May suit

    Most hair types as part of a balanced formula.

    Worth knowing

    Usually present in small amounts to balance the formula.

  • Sodium Hydroxide pH adjusters
    pH adjuster

    Helps control and stabilise the pH of haircare formulations.

    May suit

    Those interested in how product pH affects scalp comfort or hair cuticle behaviour.

    Worth knowing

    It is used in very small amounts to bring a formula to the desired pH range. Once adjusted, it does not act as a strong alkaline agent in the finished product.

  • Isopropyl Alcohol Solvents
    Solvent

    Helps dissolve ingredients and supports quick-drying formulas.

    May suit

    Those using styling products that benefit from fast evaporation, such as sprays.

    Worth knowing

    It is commonly used at low levels to improve texture and spreadability. It evaporates quickly, leaving minimal residue on the hair.

  • Glycerin Humectants
    Humectant

    Attracts and holds water to help hair feel hydrated and soft.

    May suit

    Dry or dehydrated hair, and many curl and moisture routines.

    Worth knowing

    A very common, well-tolerated humectant used across countless products.

  • Limonene Fragrance ingredients
    Fragrance component

    A fragrance component that also occurs naturally in many citrus and plant oils.

    Worth knowing

    A fragrance component that must be listed separately on labels because a minority of people can be sensitive to it. Its presence is normal, required disclosure and is not a quality signal.

  • Linalool Fragrance ingredients
    Fragrance component

    A fragrance component found naturally in many flowers and spices.

    Worth knowing

    A fragrance component that must be listed separately on labels because a minority of people can be sensitive to it. Its presence is normal, required disclosure and is not a quality signal.

  • Hexyl Cinnamal Fragrance ingredients
    Fragrance component

    A fragrance ingredient used to give products a light, floral scent.

    May suit

    Those who enjoy subtly scented haircare products.

    Worth knowing

    It is one of the fragrance components that must be listed separately when present above certain levels. People with known fragrance sensitivities may choose to monitor for it.

  • Benzyl Alcohol Preservatives
    Preservative

    Helps preserve formulations and can also act as a solvent or light fragrance component.

    May suit

    Those interested in understanding preservative systems or identifying potential fragrance allergens.

    Worth knowing

    Benzyl Alcohol is commonly used in professional haircare to support product stability and texture. It can also naturally occur in some essential oils.

  • Salicylic Acid Exfoliating acids
    Scalp exfoliant

    Helps dissolve dead skin buildup on the scalp and supports a clearer, fresher surface.

    May suit

    People dealing with flaky scalps, congestion or product buildup.

    Worth knowing

    It is widely used in scalp-care formulas because it breaks down excess oils and debris without needing physical scrubbing. Often found in dandruff-control products.

Questions and Answers

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