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Water Colour Gel® - PPD-Free Hair Dye

⭐⭐⭐⭐⭐ 4.8/5

A gentler approach to hair colour, Water Colour Gel offers:

  1. Rich, natural hair colours with up to 100% grey coverage
  2. Simple at-home application in around 30 minutes
  3. A gentle formula, free from PPD, ammonia, alcohol, resorcinol, perfume, bleaching agents and henna

Choose your timing to suit you: up to 30 minutes for a quasi-permanent hair colour lasting 18+ washes, or from 20 minutes for a softer, semi-permanent result. Stubborn greys? Try up to 50 minutes for best grey hair coverage.

Designed to be kinder to sensitive skin, applying Water Colour Gel is an easy 4-step process. We'll even send you a free tint brush with your first order, which is the only specialist tool you'll need.

£14 3 for £36 - save £6
Choose your colour

Choose your hair colour shade

Covers grey, won't lighten hair. Water Colour Gel is free from harsh chemicals like PPD and Ammonia, so won't lighten your hair. It is ideal for grey hair coverage or for darkening light hair. The hair colour samples below are the approximate shade when applied to white hair.

Barley Pale Light Blonde Hair Dye Gel - Ammonia Free and PPD Free Hair Dye for Grey Hair
Barley - 9/0 →
Pale blonde
£14.00   
3 for £36
Water Colour Toasted Barley Hair Colour Gel - Pale Ash Blonde Hair Dye for natural hair colours
Toasted Barley - 9/1 →
Pale ash blonde
£14.00   
3 for £36
Water Colour Golden Barley Hair Colour Gel - Light Golden Blonde Hair Dye without PPD and ammonia
Golden Barley - 9/3 →
Golden pale blonde
£14.00   
3 for £36
Water Colour Wheat Medium Blonde Hair Dye - Ammonia Free Wheat Hair Colour Gel UK
Wheat - 8/0 →
Mid blonde
£14.00   
3 for £36
Toasted Wheat - 8/1 →
Mid ash blonde
£14.00   
3 for £36
Water Colour Toffee Hair Colour Gel - Ammonia Free and PPD Free Toffee Hair Dye
Toffee - 8/33 →
Mid honey blonde
£14.00   
3 for £36
Water Colour Pumpkin Hair Dye for natural light copper hair colour - Ammonia free and PPD free hair dye
Pumpkin - 8/43 →
Light copper
£14.00   
3 for £36
Rye Water Colour Gel PPD Free hair colour - Dark Blonde Hair Dye Gel
Rye - 7/0 →
Dark blonde
£14.00   
3 for £36
Water Colour Gel White Pepper Hair Colour Gel - Ammonia Free Medium Grey Hair Dye UK
White Pepper - 7/01 →
Dark ash blonde
£14.00   
3 for £36
Water Colour Golden Rye Hair Dye Gel - Dark Golden Blonde Hair Dye for natural hair colour
Golden Rye - 7/3 →
Dark golden blonde
£14.00   
3 for £36
Water Colour Cinnamon Hair Dye Gel for medium copper blonde hair colour - PPD Free hair dye
Cinnamon - 7/34 →
Mid copper blonde
£14.00   
3 for £36
Water Colour Hot Ginger Hair Dye Gel - Intense Copper Blonde Hair Dye without PPD and ammonia
Hot Ginger - 7/44 →
Intense copper blonde
£14.00   
3 for £36
Water Colour Brazil Nut Hair Dye Gel - PPD Free Light Brown Hair Colour Dye
Brazil Nut - 6/0 →
Light brown
£14.00   
3 for £36
Water Colour Mulled Wine Hair Dye - PPD free light burgundy hair colour UK
Mulled Wine - 6/55 →
Light burgundy brown
£14.00   
3 for £36
Water Colour Damson Hair Dye without ammonia - Dark Purple Hair Colour Gel
Damson - 6/7 →
Vibrant deep purple
£14.00   
3 for £36
Water Colour Chocolate Brown Hair Dye - Chocolate Hair Colour Gel for natural hair colours without ammonia and ppd
Chocolate - 5/0 →
Mid brown
£14.00   
3 for £36
Water Colour Warm Chocolate Hair Colour Gel - Warm Medium Brown Hair Dye for natural hair colour
Warm Chocolate - 5/3 →
Mid warm brown
£14.00   
3 for £36
Water Colour Dark Cherry Hair Dye UK - Medium mahogany hair dye without ammonia and PPD
Dark Cherry - 5/6 →
Mid mahogany brown
£14.00   
3 for £36
Water Colour Dark Chocolate Hair Dye - PPD Free Dark Brown Hair Colour Gel
Dark Chocolate - 4/0 →
Dark brown
£14.00   
3 for £36
Black Coffee Water Colour Hair Dye Gel - Very Dark Brown Hair Colour Without Ammonia
Black Coffee - 3/0 →
Very dark brown
£14.00   
3 for £36

Hair Dying Accessories...

Useful tools to help with your home hair colouring. Remember, we'll send you a FREE tint brush with your first Water Colour Gel order!

Water Colour Hair Dye Applicator Bottle - Gentle Hair Dye Accessories for hair colouring at home
Water Colour Applicator Bottle
£2.00    more info...
Black Tint Bowl - Recyclable Plastic Tint Bowl as part of our hair colouring accessories range
Tint Bowl (Black)
£3.25    more info...
Black Long Tail Tint Brush - Black Plastic Tint Brush for hair dye application
Long Tail Tint Brush (Black)
£2.25    more info...
Straw eco friendly reusable tint bowl - Hair Tools Straw Tint Bowl for hair colouring at home
Eco Tint Bowl (Straw)
£4.95    more info...
Eco Friendly Tint Brush - Hair Tools Straw Tint Brush for hair dying at home
Eco Tint Brush (Straw)
£2.95    more info...

Why should I choose Water Colour Gel?

Best PPD free hair dye for grey hair coverage Our best cover yet

Our deepest, most vibrant hair colour shades yet - with better grey coverage than ever, even on resistant grey hair. Combine shades or adjust your processing time to fine-tune the result.

Read more
Quick hair colour gel - semi-permanent hair dye for grey hair Hair colour in record time

Semi-permanent hair colour from just 20 minutes, or allow 30 minutes for quasi-permanent colour lasting 18+ washes. If you have resistant grey, allowing up to 50 minutes will give the best result.

Read more
Water Colour ammonia free hair dye gel for gentle hair colours Gentle formula

Free from PPD, ammonia, alcohol, resorcinol, perfume and bleaching agents - all the same gentle promises, now with better colour and coverage.

Read more
Mess Free Water Colour hair dye gel for quick hair colour and grey coverage Mess free application

Simply mix with water to form a thick, easy-to-apply gel - no drips, no separate developer bottle, just your bowl and brush.

Read more
Ammonia free and PPD free hair dye for gentle hair colours Planet conscious

Our powder-only vials ship without water, cutting over 100g of weight and packaging per colour. No mixer bottle needed, and hats/gloves are optional at checkout.

Read more
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Best PPD free hair dye for grey hair coverage

Our best cover yet

See the difference right away, with the deepest and most vibrant natural hair colour shades in our range.

With better grey hair coverage than our original Water Colour hair dye, we're confident Water Colour Gel will tackle even resistant grey hair, allowing you to continue to choose a gentle approach even as grey hair increases.

As with our original Water Colour hair dye, you can combine hair colour shades to create your own custom hair colours, as well as adjusting processing times to adapt the grey coverage / permanency.

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Colour in record time

Speedy colour development

Water Colour Gel needs just 20 or 30 minutes processing time, giving you great hair colouring results quicker than ever.

Which time to choose? It depends on the permanency you'd like.

Choose 30 minutes for quasi-permanent hair colour, which will last up to 18+ washes with up to 100% grey coverage. If you have stubborn greys, this time can be extended up to 40 minutes.

Demi-permanent hair colour can be achieved from just 20 minutes, and will last up to 12 washes. This will give a more subtle grey coverage, useful for blending rather than hiding greys.

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Gentle formula

Free from nasties

Gentle Hair Dye isn't just our name - it's our mission. You can rest assured that just like our original Water Colour hair dye, Water Colour Gel is:

  • Free from PPD
  • Free from ammonia
  • Free from alcohol
  • Free from resorcinol
  • Free from perfume
  • Free from bleaching agents

Not only that, but it gives you even better hair colour and grey coverage in half the time. What's not to like?

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Mess free application

Mess free application

Water Colour Gel hair dye is easy to mix and apply, using any non-metallic bowl - it's a simple 4-step process:

  1. Mix. Measure 90ml of hand-hot water into your bowl, then gradually stir in the powder from your vial with your free tint brush until it forms a smooth gel.
  2. Stand. Leave the gel to stand for 2 minutes so it thickens, then give it one more stir before you begin.
  3. Apply. Section your hair and apply evenly from roots to ends, making sure every strand is fully coated.
  4. Rinse. Leave for 20-30 minutes depending on the coverage and longevity you want, then rinse thoroughly until the water runs clear.

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Planet conscious

Helping the planet

By shipping our hair dyes without water, we're not only saving over 100g in weight per colour, we're also able to use super small bottles that fit in small packages. All of this gives a lower carbon footprint and uses less plastic and other packaging material.

Water Colour Gel does not require any special mixing equipment - any non-metallic bowl is fine - but if you prefer applying from a bottle, you can purchase one of our reusable mixer bottles.

When it comes to hats and gloves, we include single use ones free of charge. If you don't need them, you can tick a box after check out and we'll leave them out of your order.

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Why customers love Water Colour Gel

What a wonderful product! I stopped dying my hair 10 years ago and have had naturally grey/white hair since...

Geraldine S

I just had to write a review to say how impressed I am with the water gel, I've just tried a new shade and it...

Catherine B

Love, love, love the Gentle Hair Dye products! They are exactly what they say on the tin! I\u2019ve used them...

Bev D

Gel works better than the original and lasts well if you leave it on long enough. I am going to try some...

Deni C

I previously gave a one star as I struggled to get the right colour without immediate fade, then I went...

Rachel D

Brilliant customer service and always at the end of a phone to offer advice and help. The water colour gels...

Maralyn L

I used the Wheat shade. It was easy to apply. I\u2019m pleased with the overall results as I was looking for...

Gillian

It doesn\u2019t leave my hair damaged like harsh dyes but it covers my grey.

Hayley

Read more of our verified reviews, collected independently by Reviews.io.

Read more on Reviews.io

See all our reviews on Reviews.io.

We're here to help

Gentle Hair Dye is a small, family-run team. We know our products inside out because we've developed them over 25 years - helping you find your perfect hair colour matters to us.

These are the questions we're asked the most. If yours isn't there, just get in touch - a real person will get back to you.

Contact us

Water Colour Gel FAQ

Do I need any equipment?

The only special item you will need when using Water Colour Gel hair dye is the free reusable tint brush that you'll receive with your first order.

The hair colour gel can be mixed in any non-metallic bowl, and a measuring cup or jug is also useful to ensure the correct amount of water (90ml) is used. You'll probably be able to find these items in your kitchen, or we sell plastic and plastic-free tint bowls from £3.25.

How long does the colour last?

Water Colour Gel can be used as a Demi or Quasi-Permanent hair dye. It should be applied to dry hair, with timings as follows:

Quasi-Permanent
When applied for just 30 minutes, you'll enjoy hair colour lasting up to 18+ washes and providing up to 100% grey coverage.

Demi-Permanent
When applied for only 20 minutes, your hair colour will last up to 12 washes and provide subtle grey coverage.

The above is a guide only – the results may be affected by the condition of your hair

How do I apply Water Colour Gel?

Water Colour Gel hair dye should be applied to dry hair following our simple 4 step application process.

Step 1 – Mix

  • Measure 90ml of hot (but not scalding - approx. 45 degrees celsius) water into a mixing bowl.
  • Gradually add all the powder from the vial into the water, stirring constantly with a tint brush until fully mixed and beginning to form a gel.
  • Leave to stand for 2 minutes to allow gel to thicken, then stir again before application.

Step 2 – Apply

  • Wearing gloves, apply to dry hair.
  • Follow either the Full Head or Regrowth application methods (detailed below).

Step 3 – Wait

  • Pile your hair on top of your head and put on the cap provided, ensuring it’s secure to prevent dripping.
  • Keep your hair warm by wrapping a towel over the cap, ensuring the solution doesn’t dry out.
  • Set a timer – either 20 or 30 minutes (see below), depending on the permanency you'd like.

Step 4 – Rinse

  • Rinse the colour from your hair until the water runs clear.
  • Shampoo your hair using your usual shampoo and rinse thoroughly again.
  • Apply your usual conditioner and leave in for at least one minute to restore the pH balance.
  • Rinse and style as normal.

Application Methods

Full Head Application

Use for first-time hair colouring, or when there’s no marked difference between roots and ends.

  • Use the tint brush to apply the hair dye gel mixture to your roots in 1.5cm sections.
  • Work the mixture through the rest of your hair, ensuring even coverage from roots to ends.
  • Choose your development time - 20 or 30 minutes.

Regrowth Application

Use to cover root regrowth when the rest of your hair is already coloured.

  • Apply the hair colour gel mixture to your roots only at 1.5cm intervals using the tint brush.
  • Choose your development time. If required, apply the remaining mixture to the ends 10 minutes before the end of your chosen processing time.

Development Time

Water Colour Gel produces rich natural hair colours in record time - twice as fast as Water Colour hair dye! Choose the permanency of your hair colour by adjusting the timing:

20 minutes – Demi-Permanent

For hair colour that lasts up to 12 washes, and provides subtle grey coverage.

30 minutes – Quasi-permanent

For hair colour that lasts up to 18+ washes, giving up to 100% grey coverage.

Can I still use a mixer bottle?

Many of you asked this - and the answer is yes!

If you prefer the familiar bottle method for applying your hair dye, we now offer bottles with a new 90ml fill line to make mixing even easier.

Here's how to use it:

  1. Add your hot water to the 60ml fill line.
  2. Add the power.
  3. Top up with hot water to the 90ml fill line.
  4. Shake well for 1 minute.
  5. Let the mixture stand for 2 to 3 mimutes.
  6. Shake again and your ready to go.

Our mixer bottles are re-usable and can be purchased from our website for just £2.

Can I mix a custom shade?

Yes! Want your favourite Water Colour Gel hair dye shade to be just a little more golden? Or perhaps, add a hint of red or a dash of copper? Our article in the Infohub takes you step by step through the process of mixing different hair colour shades to create a hair colour that is unique to you.

Can I lighten my hair with Water Colour Gel?

Water Colour Gel does not contain any harsh bleaching agents - therefore, it can only darken or tone your hair. This is perfect for regular grey coverage, or for darkening your existing hair colour.

If you have more than a smattering of greys, there is one easy trick you could try for a beautiful natural highlights effect. Simply choose a Water Colour Gel shade lighter than your natural colour.

How many vials of Water Colour Gel will I need?

We cannot give you an exact answer as this will always depend on how long or thick your hair is.

If your hair is of average thickness and about shoulder length, you will usually need 1 vial of Water Colour Gel. For longer or thicker hair you may need 2 or even 3 vials.

If you are applying to your roots only, you may even get 2 applications from the same vial of hair colour gel. You will need to split the powder carefully and reduce the water volume. Ensure any powder you are not using right away remains totally dry and is tightly re-sealed in the vial.

What are the ingredients in Water Colour Gel?

Water Colour Gel is an ammonia and PPD free hair dye that uses a water-based formula that preserves your hair's natural structure. It does not contain harsh chemicals such as PPD, ammonia, alcohol, peroxide, resorcinol or bleaching agents.

The following ingredients are found in all shades of Water Colour Gel hair colour:

Sodium Sulfate
Sodium Percarbonate
Xanthan Gum
Methyl Ethyl Cellulose
Silicia Dioxide
Sodium Laurol Sarcosinate
Mineral Oil
Sodium Metasilicate

Depending on the hair colour shade you choose, your hair dye will also contain a combination of the following:

P-Toluenediamine Sulfate
P-Aminophenol
M-Aminophenol Sulfate
1,5-Dihydroxynaphthlene
P-Amino-O- Cresol
4-Amino-M- Cresol
2-Amino-6- Chloro-Nitrophenol
1-Hydroxyethyl 4.5- Diamino
Pyrazole Sulfate
HC Yellow 2

I have a PPD allergy - will this be ok for me?

Water Colour Gel is a PPD free hair dye. Many people who react to standard PPD hair dyes find this hair dye colour much easier to tolerate.

However: If you have a confirmed allergy to PPD (p-phenylenediamine), it’s important to be cautious with any hair colour, even our PPD free hair dyes, because:

  1. Some people with PPD allergy can also react to related colour ingredients (this is called cross-reaction)
  2. Sensitivities can be unpredictable, and allergies can develop over time (sensitisation) even if you’ve used a product before without problems

Whether you have allergies or not, you should always patch test all hair dyes before every use - even if you’ve used the product successfully in the past. If you get any itching, redness, stinging, swelling or irritation during the patch test, do not use the product. If you’ve had a severe reaction before (e.g. facial/eye swelling, blistering, widespread rash), we recommend speaking with a GP/dermatologist and asking about patch testing to confirm which ingredients you react to.

How do I do a patch test?

Even if you have used Water Colour Gel hair dye before, and although it is an ammonia and PPD free hair dye, it is essential to patch test before every hair dye gel application.

Patch testing with Water Colour Gel is a simple 3-step process:

1. Mix Test Solution

Take a small pinch of Water Colour Gel powder and mix it with a drop of warm water. Be careful to reseal the cap securely on the remaining dye to keep it dry.

2. Apply Test

Clean a small area inside your elbow and apply the solution with a cotton bud. Allow it to dry and leave on for a minimum of 48 hours.

3. Monitor for Reactions

If irritation, redness, itching, swelling, or burning occurs, wash off immediately and do not use the product. If symptoms persist seek medical advice.

What will I get in my order?

Your order of hair colour gel will include:

  • Your chosen Water Colour vial(s).
  • Polythene hat and gloves – one per item ordered.
  • Instructions – one per order

Your first order will also include a free reusable tint brush!

We pride ourselves on offering eco-friendly options. If you do not need the hat and gloves, you can opt to remove them from your order after checkout.

What is the shelf-life of Water Colour Gel powder?

When stored correctly, Water Colour Gel powder can be stored for many years. However, it is best to use within two years of purchase if you can to minimise the chance of it spoiling.

It is important to store your Water Colour hair colour gel somewhere dry, and ideally also cool and dark like a drawer or cupboard (do not store in the bathroom). Check the lids are on tight as this will help to prevent moisture getting in.

All about our PPD free hair colour

Water Colour Gel is our top-selling 'just add water' hair dye that's free from PPD and Ammonia. It was developed to be kinder to hair, and produce even better natural looking hair colour than our original Water Colour. It is capable of up to 100% grey coverage without the use of damaging chemicals.

You'll receive a small bottle of Water Colour Gel hair dye powder which, when mixed with water, forms a thick, easy to apply gel hair dye. Kind to your hair, it boasts excellent grey coverage and gives rich, natural looking hair colours.

Free from ammonia, PPD, alcohol, resorcinol, perfume and bleaching agents, you can enjoy beautiful natural hair colours without the need for harsh chemicals.

We'll send you a free tint brush with your first Water Colour Gel order which will last for years to come. This is the only piece of specialist equipment you need. Usage instructions are enclosed with every order, and explain how to use Water Colour Gel hair dye to achieve your choice of permanence - from semi-permanent right through to a quasi-permanent natural hair colour, lasting up to 18+ washes. We also include plastic hats and gloves. You can opt out of these after checkout if you have your own reusable ones.

As with all our gentle hair colours, Water Colour Gel can only be used to cover greys or darken your existing hair colour. Since it is free from bleaching agents, it will not lighten your hair.

For the best grey hair coverage, we'd recommend selecting a base shade colour (shades that end in /0) and applying for the full 30 minutes.

Get the most from Water Colour Gel

From colour mixing to grey coverage - here are some useful resources to help you get the best results from our ammonia free hair colour collection.

How to dye stubborn grey hair - 7 top tips
How do I dye my stubborn grey hair?

If your greys seem particularly stubborn you are not alone – “how do I hide my stubborn grey hair?” is one of the questions we hear most...

How to mix hair dye colour shades at home with Water Colour hair colours
How can I mix my own hair colour shades?

Ever wanted your favourite Water Colour Gel shade to be just a little more golden? Or perhaps, add a hint of red or a dash of copper?...

benefits of using a tint brush when hair colouring at home - how to use a tint brush
How do I use a tint brush to apply hair colour?

With your first Water Colour Gel order you'll receive a tint brush - the only specialist tool you'll need. These are great to help you...

Do I need to use all of my hair dye in one go? How to store leftover hair dye
Do I Need To Use All The Hair Dye?

No - as long as you are careful. Our Water Colour Gel customers often ask us this question, as a smaller amount of hair dye can come in...

£14 3 for £36
Choose your colour
Cruelty
Free
Gentle
Formulas
Suitable
for Vegans
Friendly
Support
Recyclable
Packaging
Speedy
Delivery