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Hard Water Shampoo

Iles Formula
(1)
Hard Water Shampoo
Iles Formula
(1)
Benefits
  • Hair Strengthening
  • Conditioning
  • Anti-Frizz
  • Hydrating
  • Promotes Shine

The Hard Water Shampoo by Iles Formula is a gentle yet reparative shampoo designed to cleanse the hair without stripping, while actively supporting strength, softness, and long-term hair integrity. It purifies the scalp and hair fiber with a mild, sulfate-free cleansing system that respects the cuticle, making it ideal for dry, damaged, colour-treated, or chemically processed hair.

The formula is crafted with a higher proportion of modern, low-irritation cleansing agents, allowing it to perform effectively in hard-water conditions by lifting impurities and mineral residue more efficiently while maintaining moisture balance.

A blend of advanced conditioning agents and humectants helps reduce breakage and improve manageability during cleansing. Panthenol (Pro-Vitamin B5) hydrates the hair fiber, improves elasticity, and enhances softness, while hydrolyzed silk smooths the cuticle and reinforces weakened areas, leaving hair silky and resilient even before conditioning.

Pracaxi seed oil replenishes lost lipids, seals the cuticle, and boosts shine without heaviness, while Yacón root juice attracts and retains moisture to keep hair supple and flexible.

Conditioning polymers improve slip and detangling, minimizing mechanical stress during washing. The result is hair that feels deeply clean yet nourished, visibly smoother, stronger, and more luminous with every wash, even in mineral-rich water.

Read more

The Hard Water Shampoo by Iles Formula is a gentle yet reparative shampoo designed to cleanse the hair without stripping, while actively supporting strength, softness, and long-term hair integrity. It purifies the scalp and hair fiber with a mild, sulfate-free cleansing system that respects the cuticle, making it ideal for dry, damaged, colour-treated, or chemically processed hair.

The formula is crafted with a higher proportion of modern, low-irritation cleansing agents, allowing it to perform effectively in hard-water conditions by lifting impurities and mineral residue more efficiently while maintaining moisture balance.

A blend of advanced conditioning agents and humectants helps reduce breakage and improve manageability during cleansing. Panthenol (Pro-Vitamin B5) hydrates the hair fiber, improves elasticity, and enhances softness, while hydrolyzed silk smooths the cuticle and reinforces weakened areas, leaving hair silky and resilient even before conditioning.

Pracaxi seed oil replenishes lost lipids, seals the cuticle, and boosts shine without heaviness, while Yacón root juice attracts and retains moisture to keep hair supple and flexible.

Conditioning polymers improve slip and detangling, minimizing mechanical stress during washing. The result is hair that feels deeply clean yet nourished, visibly smoother, stronger, and more luminous with every wash, even in mineral-rich water.

Read less

200 ml

£41
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Is this for you?

For you if

  • Damaged Hair
  • Dry Hair
  • Frizzy Hair
  • Dry Hair
  • Dull Hair

Suitable for

  • Dry Hair
  • Normal Hair

Not for you if

  • Oily Scalp
  • Hair Extensions

Not sure? Consult an expert
How to apply
Apply to very wet hair. The key is to add more water while massaging, rather than more product—this activates the root extract and helps begin the process of reducing hair breakage and repairing damage. If hair breakage is a concern, concentrate on the ends for maximum nourishment and repair. Leave on for 1 minute, then rinse thoroughly to allow the formula to soften brittle hair and start the repair process. Repeat if needed. For very damaged or weakened hair, a third shampoo is recommended. Rinse thoroughly.

Core Routine

  1. Hair Treatment
  2. Shampoo
  3. Conditioner
  4. Scalp Treatment
  5. SPF

Period after opening

24 Months
Ingredients
  • Pracaxi Seed OilHair Strengthening · Conditioning · Anti-Frizz
    Pracaxi Seed Oil is a nutrient-rich plant oil extracted from the seeds of the Amazonian Pracaxi tree, and is valued for its exceptional smoothing, strengthening and shine-enhancing properties. It is naturally high in behenic, oleic and linoleic fatty acids, which allow the oil to spread easily over the hair surface and penetrate the cuticle to replenish lost lipids. By restoring this lipid layer, Pracaxi seed oil helps seal the cuticle, reduce moisture loss and improve elasticity, making hair softer, more flexible and less prone to breakage. Its lightweight yet deeply conditioning nature also helps tame frizz, improve manageability and add gloss without leaving hair greasy, making it particularly effective for dry, damaged, textured or chemically treated hair.
  • Panthenol (Pro-Vitamin B5)Hair Strengthening · Anti-Frizz · Hydrating
    Panthenol, also known as pro-vitamin B5, is a stable form of Pantothenic Acid which penetrates the hair fiber and converts into vitamin B5 once applied. It acts as a humectant, attracting and binding moisture to the hair, which helps prevent dryness and brittleness while improving softness and elasticity. Inside the hair shaft, panthenol increases water content, giving hair a fuller, thicker feel and improving flexibility so strands are less likely to snap under stress. At the same time, it forms a lightweight, breathable film on the surface of the hair that smooths the cuticle, enhances shine and slip, reduces friction during washing and brushing, and helps protect against mechanical damage. On the scalp, it supports hydration and barrier function, contributing to overall hair health, making panthenol especially effective for reducing breakage and improving the look and feel of dry, damaged or chemically treated hair.
  • Yacon Root JuiceHair Strengthening · Conditioning
    Yacón Root Juice is a plant-derived extract and is used for its powerful humectant and conditioning properties. Naturally rich in fructooligosaccharides and sugars, it attracts and binds water to the hair and scalp, helping to maintain hydration and prevent dryness. By increasing moisture content within the hair fiber, Yacón root juice improves softness, flexibility and elasticity, which reduces brittleness and breakage. It also helps smooth the cuticle and enhance manageability, while supporting scalp comfort by maintaining hydration, making it especially beneficial for dry, fragile or stressed hair.
  • Silk ExtractHair Strengthening · Anti-Frizz · Promoting Shine
    Silk Extract is a protein that coats the hair shaft, enhancing smoothness and shine, whilst protecting against environmental stressors. It strengthens and conditions hair fibres, reducing breakage, resulting in softer, more manageable hair.
  • PolyquaterniumHair Strengthening · Anti-Frizz
    Polyquaternium is a lightweight, water-soluble conditioning polymer used in haircare to improve softness, manageability and frizz control without weighing hair down. It works by carrying a positive charge, which allows it to selectively bind to the negatively charged areas of the hair, especially damaged or porous sections, where it forms a thin, flexible conditioning film. This film smooths the hair cuticle, increases slip, reduces tangling and minimises friction during washing and brushing, helping to prevent breakage. Because it rinses cleanly and does not build up heavily, Polyquaternium leaves hair feeling soft, silky and conditioned while still light, making it suitable for fine, colour-treated and damaged hair types.
View full ingredient list

Water / Aqua / Eau, Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Betaine, Sodium Cocoyl Isethionate, Sodium Methyl Oleoyl Taurate, Pentaclethra Macroloba Seed Oil, Polymnia Sonchifolia Root Juice, Hydrolyzed Silk, Panthenol, Polyquaternium-7, Polyquaternium-10, Propylene Carbonate, Glycol Distearate, Benzoic Acid, Behenyl / Stearyl Aminopropanediol Esters, Laureth-4, Sea Salt, Dehydroacetic Acid, Propanediol, PVP, Xanthan Gum, Citric Acid, Fragrance (Parfum)

Please note: The ingredients listed in this product are subject to change as the formulation is updated. We aim to update the INCI list as soon as possible, but we encourage you to read the ingredient list on the product itself to ensure it's suitable for your personal use.
Smell & Texture

Smell: White flowers, fresh linen and soft, subtle French-style florals

Texture: Rich and creamy
Delivery & Returns

ROYAL MAIL TRACKED 48: 
£5.00 (free for members on orders over £75)
Delivered within 2-3 working days.

NEXT WORKING DAY DELIVERY: 
£8.00 (free for members on orders over £150)
Delivered the next working day if ordered before 1pm.

SATURDAY UK DELIVERY: 
£18.00
Delivered on Saturday when ordered before 1pm on Friday.

*(For NI, Channel Islands & Scotland - due to the courier service in place, we cannot guarantee next day delivery to these areas, however we expect you will receive your delivery within 2-5 days).

RETURNS
Items returned by post can take up to 14 working days to process. Credit notes can be applied to your account within 5 working days. For refunds, we will reimburse you using your original payment method which can take up to 14 days.

The Benefits

  • - + Hair Strengthening
  • - + Conditioning
  • - + Anti-Frizz
  • - + Hydrating
  • - + Promoting Shine
Hair Strengthening

Strengthening in haircare is all about restoring your hair's healthy structure and enhancing its resilience against damage, breakage, and the stresses of daily styling, such as heat exposure. Strengthening haircare products deliver essential components like proteins, hydration, and lipids that work together to reinforce hair strands. They support internal hair bonds, restore moisture, and coat the outer layer to protect and smooth, resulting in a shinier, smoother finish. By promoting a healthier hair structure, these products encourage faster hair growth and improve manageability.

Conditioning

Conditioning in hair products involves replenishing hydration, nutrients, and oils to your hair strands, enhancing their manageability, smoothness, and overall health. Hair often suffers from damage caused by environmental factors like sun exposure, heat styling, brushing, and chemical treatments such as dyeing. When your hair bonds are compromised, it becomes tangled, less manageable, prone to breakage, and frizzy, losing its natural shine. Conditioning agents strengthen these bonds to repair damage, smooth the hair cuticle, reduce friction between strands, and lock in hydration. This results in softer, shinier hair that is more resistant to breakage and frizz. Regular conditioning promotes healthier, more resilient hair, visibly improving its texture and appearance quickly.

Anti-Frizz

Anti-frizz treatments focus on smoothing your hair and reducing frizziness by addressing its root causes. Frizz happens when the hair cuticle lifts due to hydration imbalance, humidity, and damage. This raised cuticle allows moisture to enter and swell the hair shaft, creating a rough texture. Anti-frizz products work by sealing the cuticle, locking in hydration, and protecting your hair from environmental and heat damage. The result is smoother, more manageable hair with significantly less frizz, giving you a sleek and polished look.

Hydrating

Hydrating your hair means boosting its water content to ensure strands stay resilient, flexible, and healthy. Proper hydration is key to preserving the integrity of your hair's cuticle. When well-hydrated, the cuticle lies flat and smooth, creating a barrier against environmental damage and reducing friction between strands, which results in less tangling and a smoother texture. Heat styling, sun exposure, and harsh chemical treatments can strip your hair of its natural moisture. Using gentle haircare products designed to hydrate without weighing your hair down helps prevent dryness, brittleness, and breakage while enhancing shine and making your hair more manageable.

Promoting Shine

Promoting Shine in haircare is all about restoring the hair’s surface integrity so it can better reflect light. Shine is a direct result of a smooth, sealed cuticle, when the protective outer scales lie flat, light reflects evenly, giving hair its healthy, radiant appearance.

Dry, damaged, or lipid-depleted hair loses this reflectivity due to raised, fragmented cuticles. Shine-enhancing formulations work by replenishing moisture and essential lipids, smoothing the hair fibre, and coating it with film-forming actives. These ingredients help repair surface damage, seal the cuticle, and create a polished finish, leaving hair softer, glossier, and more vibrant. By reinforcing both hydration and structure, these formulas restore luminosity and improve overall hair vitality.

  • - + Hair Strengthening
  • - + Conditioning
  • - + Anti-Frizz
  • - + Hydrating
  • - + Promoting Shine

Spotlight

Damaged Hair

Dry and damaged hair occurs when the hair’s natural protective barrier is weakened, allowing moisture to escape and leaving the inner structure exposed to breakage and rough texture. This damage develops through a combination of external and internal factors.

Heat styling tools lift and crack the cuticle, while chemical processes such as colouring, bleaching, or relaxing break down protein bonds and strip away essential lipids. Environmental stressors like sun exposure, pollution, wind, hard water, and salt or chlorinated water further dry and erode the hair surface.

Internally, genetics, aging, hormonal changes, dehydration, and poor nutrition can reduce the scalp’s natural oil production, making hair more prone to dryness and fragility, especially through the lengths and ends.

As the cuticle becomes rough and uneven, hair loses its ability to retain moisture, leading to dullness, frizz, tangling, split ends, and increased breakage. Repairing dry and damaged hair requires a gentle, consistent approach focused on restoring moisture, lipids, and strength.

Mild, sulfate-free cleansing helps prevent further stripping, while humectants rehydrate the hair fiber and improve flexibility. Nourishing conditioners and oils replenish lost lipids, smooth the cuticle, and seal in moisture, improving softness and shine.

Reducing heat, protecting hair during styling, and minimizing mechanical stress are equally important. With ongoing, targeted care, damaged hair can gradually regain resilience, manageability, and a healthier appearance.

Frequently Asked Questions

Why I love it

  • "Iles Formula treats hair like fine fabric; focusing on preserving the cuticle, strengthening the fiber and preventing damage before it starts. Loved by hairstylists and clients alike, Iles Formula delivers visible improvement in hair strength, shine, and breakage reduction, making it as results-focused as it is indulgent."

    X Natalie K-F

    Founder, Embassy of Beauty