Best Natural Shampoo Bars UK: 15 Plastic-Free Options

Last Updated: October 2025

The UK throws away 520 million shampoo bottles every year. Switching to the best shampoo bar or natural shampoo bar is one of the most effective ways to reduce bathroom plastic whilst keeping your hair healthy, clean, and shiny.

The best shampoo bars UK users love combine effective cleansing with sustainable packaging. Based on expert testing from Good Housekeeping Institute (650 testers), beauty lab reviews, and thousands of customer testimonials, this guide compares the best shampoo bars and natural shampoo bars available in the UK for every hair type and budget.”

Quick Comparison Table

Brand	Price	Best For	Lasts	Made In	Rating
Friendly Soap	£6	Curly hair	3 bottles worth	UK	4.8/5
The Solid Bar Co	£9-12.50	All hair types	2-3 bottles	UK	4.7/5
Dook	£12.50	Luxury, SLS-free	2 bottles	UK	4.6/5
KinKind	£9	Wide variety	2 bottles	UK	4.5/5
Faith in Nature	£7	Sulphate-free	3+ bottles	UK	4.5/5
Foamie	£6-8	Budget-friendly	2 bottles	UK	4.4/5
Eco Living	£9.45	Oily hair	2 bottles	UK	4/5
Bain & Savon	£10	Natural ingredients	2 bottles	UK	4.6/5
Lush	£12-14	Specific hair needs	Varies	UK	4.3/5
Hairy Jayne	£9	Handmade	2 bottles	UK	4.5/5
Ethique	£10.75	Hard water	3 bottles	NZ	4.6/5
Beauty Kitchen	£7.99	Oily hair	2 bottles	UK	4.2/5
Lavera	£10.75	Ethical German brand	2 bottles	Germany	4.3/5
Gruum	£12	Minimalist	2 bottles	UK	4.1/5
Battle Green	£8	Vegan, handmade	2 bottles	UK	4.8/5

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What Makes a Good Shampoo Bar?

Soap-Based vs Surfactant-Based

Soap-based bars:

• Made with saponified oils (traditional soap-making)
• Can leave residue in hard water areas
• Often require adjustment period
• Very natural but may not suit everyone

Surfactant-based bars:

• Use gentle cleansing agents (like sodium cocoyl isethionate)
• Work well in hard water
• No adjustment period needed
• Closer to liquid shampoo experience

Most modern shampoo bars are surfactant-based – they lather better and work better in UK hard water areas.

Key Ingredients to Look For

Moisturising:

• Shea butter
• Coconut oil
• Argan oil
• Castor oil

Strengthening:

• Oat protein
• Pro-Vitamin B5
• Keratin

Scalp health:

• Tea tree oil (dandruff)
• Lavender (soothing)
• Rosemary (growth stimulation)
• Peppermint (refreshing)

What to Avoid

• SLS (Sodium Lauryl Sulphate) – harsh, strips hair
• Synthetic fragrances – can irritate
• Plastic packaging – defeats the purpose!
• Parabens and silicones

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15 Best Shampoo Bars UK: Natural Shampoo Bar Reviews

These are the best shampoo bars UK testers and customers have rated highest. Each natural shampoo bar has been evaluated for effectiveness, value, and suitability for different hair types:

1. Friendly Soap Lavender & Geranium – Best for Curly Hair

Price: £6 for 95g Made in: UK Hair type: Curly, dry

According to testing by Glamour Dusk reviewing 100+ shampoo bars, Friendly Soap’s Lavender & Geranium bar was voted best for curly hair.

What makes it great: The bar contains essential oils including castor oil (promotes hair growth), coconut oil, olive oil, lavender, and rose geranium that rejuvenate and maintain hair health. The handmade biodegradable formula creates natural lathering ingredients ensuring smooth, silky hair.

Customer feedback: Users report it lasts as long as three full bottles of liquid shampoo, making it affordable and natural. The soothing fragrance combines essential oils, herbs, and spices, leaving hair smelling amazing all day.

Pros:

• Excellent for curly hair
• Long-lasting (3 bottles worth)
• Natural essential oils
• Handmade in UK
• Compact for travel
• Affordable

Cons:

• Strong lavender scent (not for everyone)
• May need conditioner for very dry hair

Key ingredients: Castor oil, coconut oil, olive oil, lavender, rose geranium

Best for: Curly-haired individuals wanting natural hair growth support

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2. The Solid Bar Company – Best Overall

Price: £12.50 (Luxury range), £9 (Essential range) Made in: UK Hair type: All types

The Solid Bar Company won the Top Santé award for outperforming over 350 liquid shampoos. Their bars are pH balanced, work in hard water, and require no transition period.

Two ranges:

Luxury bars (£12.50):

• Seven foaming agents
• Oat protein, Pro-Vitamin B5
• Plant-based silicone alternatives
• Four scents: Woodland, Orange, Herbal, Botanical

Essential bars (£9):

• Five gentle foaming ingredients
• Orange and Herbal scents
• Budget-friendly

Customer feedback: According to reviews, these work exceptionally well in hard water areas. Users report hair left soft, shiny, and healthy without product build-up.

Pros:

• Award-winning
• Works in hard water
• No transition period
• pH balanced
• Plastic-free
• Safe for coloured hair

Cons:

• Higher price point (luxury range)
• Multiple options can be overwhelming

Key ingredients: Oat protein, Pro-Vitamin B5, essential oil blends

Best for: Those in hard water areas wanting premium performance

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3. Dook of Edinburgh – Best SLS-Free Luxury

Price: £12.50 for 80g Made in: UK (Edinburgh) Hair type: All types, especially sensitive scalps

Winner of Best Shampoo Bar at the Beauty Shortlist Awards 2025, Dook’s bar is enriched with Argan Oil and Shea butter for nourishing cleanse.

Customer feedback: Reviews consistently praise the incredible smell (Bergamot and Rosemary), excellent lather, and how it leaves hair shiny and soft. Users report it feels “luxurious” compared to other natural bars they’ve tried, without the lifeless/sticky feeling some natural bars cause.

Pros:

• Award-winning (Beauty Shortlist 2025)
• Beautiful scent
• Luxurious feel
• SLS-free
• Leaves hair soft and shiny
• Argan oil and shea butter enriched

Cons:

• Premium price
• Smaller size than some brands
• May be too moisturising for oily hair

Key ingredients: Sodium Cocoyl Isethionate, Argan Oil, Shea butter, Bergamot, Rosemary

Best for: Those wanting a luxury, gentle shampoo bar experience

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4. KinKind – Best Variety

Price: £9 Made in: UK Hair type: Range for all types

Family-run UK business KinKind offers excellent variety: dry hair, curly hair, grey hair, coloured hair, sensitive skin, dandruff, and even a bar for dogs!

Customer feedback: EcoHomeLife reviews highlight the NOURISH me! bar with heavenly coconut smell. Bars lather up like traditional shampoo and clean hair very well, lasting about twice as long as bottled shampoo.

Pros:

• Wide range for specific needs
• Natural ingredients only
• UK family business
• Good value (lasts 2x bottled shampoo)
• Lathers well
• Dog shampoo bar available!

Cons:

• Variety can be overwhelming
• Some scents stronger than others

Key ingredients: Vary by bar – coconut oil, natural butters, essential oils

Best for: Those wanting targeted solutions for specific hair concerns

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5. Faith in Nature – Best Sulphate-Free

Price: £7 for 85g Made in: UK Hair type: All types, especially dry

According to EcoHomeLife testing, Faith in Nature’s sulphate-free bar is brilliant for those with dry, thick hair.

Customer feedback: Users report that whilst it doesn’t lather as quickly as sulphate bars, it cleans hair very well. The reviewer didn’t need conditioner – hair was manageable, easy to brush, and once dry was soft and healthy. Lasted over three times longer than shampoo bottles.

Pros:

• Sulphate-free
• No conditioner needed (for some)
• Lasts 3x longer than bottles
• Excellent value
• Available in Shea & Argan, Dragonfruit

Cons:

• Slower to lather
• Takes getting used to

Key ingredients: Shea butter, Argan oil

Best for: Dry, thick hair needing gentle, sulphate-free cleansing

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6. Foamie – Best Budget-Friendly

Price: £6-8 Made in: UK (German company) Hair type: Various options

Despite being a German brand, all Foamie products are made in the UK. Scientists developed their natural ingredient formulas to ensure they actually work.

Customer feedback: EcoHomeLife reviews praise the results and value. The mission to remove plastic from bathrooms whilst creating products that genuinely work resonates with customers.

Pros:

• Affordable
• Made in UK
• Scientifically formulated
• Natural ingredients
• 3-in-1 bars for men
• 2-in-1 bars for kids

Cons:

• Some find scents artificial despite natural ingredients
• Smaller bars

Key ingredients: Natural oils, gentle cleansing agents

Best for: Budget-conscious shoppers wanting effective natural bars

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7. Eco Living – Best for Oily Hair

Price: £9.45 for 85g Made in: UK Hair type: Oily

Eco Living was founded by someone wanting to live more sustainably. Their bars use only naturally derived ingredients with no harmful chemicals.

Customer feedback: According to Sustainably Lazy reviews, the bars are very popular and foam up a lot. They’re particularly effective for oily hair types due to high surfactant content, leaving hair very clean.

Pros:

• High foam (satisfying lather)
• Excellent for oily hair
• UK brand
• Minimal packaging
• Surfactant-based (no transition period)

Cons:

• Can be drying for normal/dry hair
• All bars same ingredients (just different scents)
• Synthetic fragrance oil

Key ingredients: Gentle surfactants, essential oils

Best for: Oily hair types wanting deep clean

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8. Bain & Savon – Best Zero-Waste

Price: £10 Made in: UK Hair type: All types

Bain & Savon focuses on plastic-free, zero-waste shampoo with only natural ingredients.

Customer feedback: One reviewer states: “I love the Bain and Savon shampoo bar and would recommend it to anyone who wants a plastic-free, zero-waste shampoo that contains only natural ingredients.”

Pros:

• Zero-waste ethos
• Natural ingredients only
• UK made
• Plastic-free throughout

Cons:

• Limited availability
• Higher price point
• Less variety than some brands

Key ingredients: Natural oils, plant-based cleansers

Best for: Zero-waste enthusiasts wanting completely natural bars

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9. Lush – Best for Specific Hair Needs

Price: £12-14 Made in: UK Hair type: Range for different needs

Lush is the OG shampoo bar company, offering different formulations for specific hair types and concerns.

Customer feedback: Somewhere Slowly reviews highlight Montalbano (lemon and olive oil, but can be drying) and Honey I Washed My Hair (sweet-smelling with excellent reviews). Users note Lush bars work well but choosing the right one for your hair type is crucial.

Pros:

• Wide range of formulations
• Targeted solutions (greasy hair, dry hair, volume, etc.)
• Gentle, nature-friendly ingredients
• Widely available
• Strong brand reputation

Cons:

• Can be pricey
• Some bars dry hair out
• Round tin packaging traps moisture (bars turn to goo)
• Strong scents not for everyone

Key ingredients: Vary by bar – essential oils, natural ingredients

Best for: Those wanting mainstream brand with specific formulations

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10. Hairy Jayne – Best Handmade

Price: £9 for 50g Made in: UK (Bristol) Hair type: All types, sensitive scalps

Made by Jayne, a former hairdresser, these plastic-free bars are handmade in Bristol.

Customer feedback: Sustainably Lazy testing found it left hair feeling clean and fresh, lathered fine for a sulphate-free bar, and was okay with sensitive scalps. The bar is smaller but easy to hold.

Pros:

• Handmade by former hairdresser
• Sulphate-free
• Good for sensitive scalps
• Vegan and cruelty-free
• Palm oil-free

Cons:

• Smaller bars (50g)
• Higher price per gram
• Limited availability

Key ingredients: Natural ingredients, free from sulphates

Best for: Supporting small UK artisans, sensitive scalps

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11. Ethique – Best for Hard Water

Price: £10.75 for 110g Made in: New Zealand (certified carbon neutral) Hair type: All types

New Zealand brand Ethique is carbon-neutral certified and works exceptionally well in hard water areas.

Customer feedback: Users report effective cleansing, good lather, and long-lasting bars. The brand’s environmental credentials appeal to eco-conscious consumers.

Pros:

• Carbon neutral
• Long-lasting (110g)
• Works in hard water
• Palm oil-free
• Vegan and cruelty-free
• Fragrance-free options

Cons:

• Imported (longer distance)
• Higher price point
• Contains sodium coco sulphate (mild sulphate)

Key ingredients: Coconut-based cleansers, natural oils

Best for: Hard water areas, eco-conscious consumers

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12. Beauty Kitchen – Best for Gym Hair

Price: £7.99 for 50g Made in: UK Hair type: Oily, frequently washed

Beauty Kitchen uses sodium coco sulphate (SCS) which is a non-irritating sulphate that lathers well.

Customer feedback: According to Sustainably Lazy, this is recommended for people with oily hair who can’t get on with “low poo” bars. The SCS creates good lather and cleans effectively.

Pros:

• Affordable
• Good lather
• Effective for oily hair
• Ethical brand
• Vegan and cruelty-free

Cons:

• Not Curly Girl Method approved (contains SCS)
• Can be drying for some
• Smaller bar

Key ingredients: Sodium coco sulphate, natural oils

Best for: Oily hair, frequent washers, gym-goers

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13. Lavera – Best German Engineering

Price: £10.75 for 50g Made in: Germany (in own factory) Hair type: All types

Lavera is an ethical German brand producing shampoo bars in its own factory to strict standards.

Customer feedback: Customers appreciate Lavera’s established reputation in natural beauty and quality control from factory production.

Pros:

• Own factory (quality control)
• Ethical brand reputation
• Naturally-derived fragrance
• Vegan and cruelty-free
• Palm oil-free

Cons:

• Contains sodium coco sulphate
• Expensive for size
• Not suitable for very dry hair

Key ingredients: Sodium coco sulphate, natural fragrances

Best for: Trusting established natural beauty brands

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14. Gruum – Best Minimalist

Price: £12 Made in: UK Hair type: All types, especially normal

Gruum offers minimalist formulations, including a fragrance-free bar with just 3 ingredients: shampoo base, coconut oil, and water.

Customer feedback: Users wanting simple, no-fuss bars appreciate Gruum’s minimalist approach. The fragrance-free option suits those sensitive to scents.

Pros:

• Minimalist (3 ingredients in fragrance-free)
• Fragrance-free option
• Cruelty-free
• UK made

Cons:

• One bar contains lanolin (not vegan)
• Uses synthetic fragrances in scented versions
• Higher price

Key ingredients: Gentle cleansers, coconut oil

Best for: Minimalists, fragrance-sensitive individuals

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15. Battle Green – Best Vegan

Price: £8 for 55g Made in: UK (Wales) Hair type: Various options

PETA-certified vegan and cruelty-free bars handmade in Wales with natural ingredients.

Customer feedback: Etsy reviews average 4.8/5. Customers love the smell and natural ingredients. One customer states: “Loved the smell and the natural ingredients of this shampoo bar!”

Pros:

• PETA-certified vegan
• Handmade in Wales
• Compostable packaging
• Three scent options (Citrus, Mint, Lavender & Tea Tree)
• Travel tin available
• Support small UK business

Cons:

• Smaller bars (55g)
• Limited to three scents
• Online only (Etsy)

Key ingredients: Coconut oil, essential oils

Best for: Supporting small Welsh businesses, certified vegan products

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How to Use a Shampoo Bar

Method 1: Direct application

1. Wet hair thoroughly
2. Rub bar directly onto hair in circular motions
3. Work up a lather with hands
4. Rinse thoroughly

Method 2: Create lather first

1. Wet bar in hands
2. Rub between hands to create lather
3. Apply lather to hair
4. Massage scalp
5. Rinse thoroughly

Pro tips:

• Less is more – you need less than you think
• Focus on scalp, not ends
• Rinse very thoroughly (prevents residue)
• Follow with conditioner bar if needed
• Store on draining dish between uses

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Choosing the Right Bar for Your Hair

For Curly Hair

Best: Friendly Soap Lavender & Geranium**, The Solid Bar Company Woodland

Look for: Moisturising oils, natural butters, sulphate-free

For Oily Hair

Best: Eco Living, Beauty Kitchen, The Solid Bar Company Herbal

Look for: Tea tree oil, clarifying ingredients, good cleansing

For Dry Hair

Best: Faith in Nature, Dook, The Solid Bar Company Hydrating

Look for: Argan oil, shea butter, moisturising formulas, sulphate-free

For Sensitive Scalps

Best: Hairy Jayne, The Solid Bar Company Sensitive, Gruum fragrance-free

Look for: Sulphate-free, fragrance-free or naturally fragranced, gentle formulas

For Hard Water Areas

Best: The Solid Bar Company, Ethique

Look for: pH balanced, surfactant-based (not soap-based), designed for hard water

For Coloured Hair

Best: The Solid Bar Company, KinKind

Look for: Gentle formulas, colour-safe ingredients, moisturising

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Common Questions About Shampoo Bars

Common questions about the best shampoo bars and natural shampoo bars for UK users:

Do shampoo bars really work?

Yes! According to Good Housekeeping testing with 650 participants, modern shampoo bars clean hair effectively. The Solid Bar Company won awards for outperforming 350 liquid shampoos. The key is finding the right formula for your hair type.

How long do shampoo bars last?

Most bars last equivalent to 2-3 bottles of liquid shampoo. Friendly Soap lasts 3 bottles worth. Exact duration depends on hair length, frequency of washing, and how well you store it. Average is 50-80 washes per bar.

Will shampoo bars work in hard water?

Yes, if you choose the right type. Surfactant-based bars (like The Solid Bar Company, Ethique) work better in hard water than soap-based bars. Look for bars specifically marketed as “works in hard water” or “pH balanced.”

Do I need a transition period?

Soap-based bars often require 2-4 weeks transition as your hair adjusts from liquid shampoo. Surfactant-based bars (most modern bars) typically don’t need a transition period. The Solid Bar Company specifically states “no transition period.”

Why does my hair feel waxy after using a shampoo bar?

This usually happens with soap-based bars in hard water areas. The solution: switch to surfactant-based bars, rinse very thoroughly, try an apple cider vinegar rinse (diluted), or use a conditioner bar.

Are shampoo bars better for the environment?

Yes, significantly. They eliminate plastic bottles (UK throws away 520 million annually), contain less water (so lighter to transport = lower carbon emissions), use less packaging overall, and last longer than liquid shampoo. Choose brands with compostable/recyclable packaging for maximum impact.

Can I use shampoo bars on coloured hair?

Yes! Many bars are safe for coloured hair. The Solid Bar Company specifically states their bars are safe for coloured hair. Look for gentle, sulphate-free formulas. Avoid clarifying bars which can strip colour.

How do I store a shampoo bar?

Store on a dish with drainage holes, away from direct water flow. Let it dry completely between uses. Don’t store in a closed container while wet (it’ll turn to mush). Travel: use a tin with drainage holes or let bar dry completely before closing tin.

Do shampoo bars cause hair loss?

No, quality shampoo bars don’t cause hair loss. If experiencing unusual hair loss, check: Are you rinsing thoroughly? (Residue can irritate scalp). Is the bar too harsh for your hair? (Switch to gentler formula). Is something else causing it? (Diet, stress, medical condition).

Are shampoo bars suitable for all hair types?

Yes, but you need the right formula. Oily hair: clarifying bars. Dry hair: moisturising bars. Curly hair: sulphate-free, hydrating bars. Fine hair: lightweight bars. Most brands offer multiple formulations for different hair types.

What are the best shampoo bars UK users recommend?

Based on expert testing and customer reviews, the best shampoo bars UK include The Solid Bar Company (best overall), Friendly Soap Lavender & Geranium (best for curly hair), and Dook (best luxury option). These natural shampoo bars consistently rank highest for effectiveness, value, and suitability across different hair types.

What makes a good natural shampoo bar?

A good natural shampoo bar uses gentle, plant-based ingredients like coconut oil, shea butter, and essential oils rather than harsh chemicals. The best natural shampoo bars are surfactant-based (not soap-based) for better performance in UK hard water areas, come in plastic-free packaging, and match your specific hair type needs.

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Final Thoughts

The best shampoo bars and natural shampoo bars have evolved from hippie-commune novelty to genuinely effective hair care. Modern best shampoo bars UK brands like The Solid Bar Company, Dook, and Friendly Soap prove you don’t need to compromise on performance to ditch plastic bottles.

My recommendations:

Best overall: The Solid Bar Company (luxury range) – award-winning, works in hard water, no transition period

Best budget: Foamie or Friendly Soap – under £8, effective, long-lasting

Best for curly hair: Friendly Soap Lavender & Geranium – specifically formulated, excellent reviews

Best luxury: Dook – beautiful scent, SLS-free, worth the splurge

Best variety: KinKind – specific formulas for every hair concern

Remember: finding the right shampoo bar may take trying 2-3 different options. Hair is individual. What works brilliantly for one person might not suit another. Start with bars suited to your hair type and give each one a proper trial (at least 2 weeks).

Once you find your match, you’ll save money, reduce plastic waste, and have healthier hair. That’s a win-win-win.

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