Discover the first oil powered and ammonia free permanent home hair colour for maximum colour performance and a visible improvement in hair quality.
At Garnier, we know that oil can do much more than just condition your hair. When concentrated at the heart of the Olia permanent brown hair dye formula, oil maximises the brown hair colour result. Garnier Olia permanent hair dye is a 60% oil-powered formula, with natural flower oils and ammonia free for a pleasant scent. Our at home hair dye visibly improves the quality of hair, for better shine and 35% smoother hair**. Olia home hair colour will also provide maximum colour performance for lavish, vivid and long-lasting brown hair. Plus, Olia home hair colour has a unique sensorial application and optimal scalp comfort with our non-drip smooth velvety texture of the colourant cream.
** Instrumental test vs before and after colouration.
How to find the perfect black shade for you:
Have you ever wondered what the hair colour numbers mean? The first number of a Hair Colour is how Light or Dark the brown hair dye will be, for example brown shades range from 4, Dark Brown to 6, Light Brown. The second number is the reflect which can be Natural (.0), Warm (.3, .4, .5, .6) or Cool (.1, .2). For example, 4.0 is a Natural Dark Brown, 4.3 is a Golden Dark Brown, and 4.15 is an Ash Dark Brown. Always check the back of pack to see if it is the right shade for you.
HOW TO CARRY OUT AN ALLERGY TEST?
ALWAYS DO A PATCH TEST 48 HOURS IN ADVANCE OF USING ANY COLOURANTS PRODUCTS.
After 48 hours, please check for any reaction or irritation. If you notice anything, please discontinue use of the product. For more information please visit: https://www.becoloursafe.com/
FOR HAIR COLOUR ADVICE PLEASE CALL US ON: UK: 0800 0304 031 ROI: 1800 818 671
Recycling Instructions
Instructions may vary locally
Consumer Benefits
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Shade: Garnier Olia 4.0 Dark Brown No Ammonia Permanent Hair Dye
• No Ammonia permanent at Home Hair Dye for a pleasant scent
• 60% oil-powered Brown hair dye, with natural flower oils
• Up to 100% grey hair coverage
• Maximum colour performance for intense and even colour full of beautiful reflects and long lasting shiny brown hair colour
• Visibly improves hair quality, colour after colour, making your hair 3x shinier**. Hair is nourished and protected against dryness. ** Instrumental test vs before and after colouration.
• Unique sensorial application. Optimal scalp comfort with a non-drip velvety texture and a delicate floral fragrance for an easy at home hair colour dying experience.
• Hair Dye can only lighten your natural hair colour 1 to 2 levels – check the back of pack to see if it is the right hair colour shade for you. If you have long or thick hair, use two hair dye boxes.
• Top tips: Use an old towel as hair colour may stain it. Apply moisturising cream to your hairline to avoid staining.
Instructions of Use
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How to dye your hair at home with Garnier Olia No Ammonia Permanent Hair Dye:
• Always do a patch test 48 hours in advance of using any home hair dye products.
• Please always refer to the product for full safety instructions.
Top tips for home hair dye:
• Use an old towel as permanent hair dye may stain it. Apply moisturising cream to your hairline to avoid staining from the permanent hair dye.
• Hair Dye can only lighten your natural hair colour 1 to 2 levels – check the back of pack to see if it is the right hair colour shade for you. If you have long or thick hair, use two hair dye boxes.
Step by step process
1. Start by putting on gloves and instantly mix the colour cream and the developer cream in the applicator bottle.
Shake well to mix.
2. Apply the mix in sections, starting with your roots and working through to the ends
3. Leave to develop for up to 45mins, as stated on the instructions, depending on the result you wish to achieve.
4. Rinse until the water runs clear and apply the silk & shine conditioner and rinse again.
*Please be aware that ingredient lists for products in our brand are updated regularly. Please refer to the ingredient list on the product package for the most up-to-date list of ingredients to ensure it is suitable for your personal use.
Safety Information
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SAFETY INSTRUCTIONS
HAIR COLOURANTS CAN CAUSE SEVERE ALLERGIC REACTIONS
Read and follow instructions.
This product is not intended for use on persons under the age of 16.
TEMPORARY “BLACK HENNA” TATTOOS MAY INCREASE YOUR RISK OF ALLERGY.
Do not colour your hair if:
• you have a rash on your face or sensitive, irritated and damaged scalp
• you have ever experienced any reaction after colouring your hair
• you have experienced a reaction to a temporary “black henna” tattoo in the past
IGNORING AN ALLERGY CAN BE LIFE-THREATENING.
You must conduct an ALLERGY ALERT TEST 48 hours before each time you colour even if you have already used colouring products before.
So remember to buy the product 48 hours in advance. (Read and follow the instruction leaflet).
In case of any reaction or when in doubt consult a doctor before using any hair colour product.
The number 4 indicates the level of darkness (Dark Brown), while the .0 signifies a Natural reflect. This shade is designed to provide a natural-looking dark brown result.
Will this dye cover my grey hair?
Yes, Garnier Olia 4.0 provides up to 100% grey hair coverage. It is formulated to offer maximum colour performance for intense, even colour.
How does the oil-powered formula benefit my hair?
The formula is 60% oil-powered, using natural flower oils concentrated at the heart of the formula to maximise colour results. This visibly improves hair quality, leaving it up to 35% smoother and up to 3x shinier.
How many boxes should I buy?
If you have long or thick hair, you should use two hair dye boxes to ensure you have enough product for full coverage. Please note that this dye can only lighten your natural hair colour by 1 to 2 levels.
Do I need to do an allergy test if I've dyed my hair before?
Yes, you must conduct an Allergy Alert Test 48 hours before each time you colour, even if you have used colouring products in the past. Ignoring an allergy can be life-threatening, so always buy the product in advance.
Reviews
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Overall Rating
4.4
813 Reviews
113 out of 150 (75%) reviewers recommend this product
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Most Recent
cinziakhan
london
Review1
Vote1
1 out of 5 stars.
dyed hair black!!!
5 months ago
i kept the hair dye in for 20 mins , 10 mins LESS than the advised time and now i have ended up with jet black hair??????? sooooooo annoying do not get this profuct
No, I do not recommend this product.
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Carms
Review1
Votes0
4 out of 5 stars.
Gentle product
10 months ago
I've used it once and while it's a very gentle product that doesn't smell unpleasant, with good coverage - the colour seems just plain black. Shade 4.0 is supposed to be dark brown, but now, two weeks later, while it hasn't really faded, there's still no 'brown' - just the same 'black'. Lovely gentle product though, but I'll have to reconsider as I want to stay as close to my natural colour as possible.
Yes, I recommend this product.
Originally posted on boots.com
Caitlin
Review1
Votes0
2 out of 5 stars.
Washes out quickly
a year ago
This always use to be my favorite hair dye. However the last time I used it, it has completely washed out within a few weeks! It also completely washed out of all my clothes, which is nice but definitely shows it’s no longer a permanent dye like they claim to be. I’m guessing they have changed the ingredients at some point!
No, I do not recommend this product.
Originally posted on boots.com
MMJ1
Verified Purchaser
Review1
Votes0
5 out of 5 stars.
Good coverage
Verified Purchaser
a year ago
Good coverage. Easy to use. Leaves hair feeling nourished
Yes, I recommend this product.
Originally posted on boots.com
Karen
Verified Purchaser
INCENTIVIZED
Received Free Product
Review1
Votes0
5 out of 5 stars.
Excellent hair colour
Verified Purchaser
INCENTIVIZED
Received Free Product
a year ago
Excellent hair colour conditions and covers hair simply and effectively
Yes, I recommend this product.
Originally posted on boots.com
Lisa
Verified Purchaser
Review1
Votes0
2 out of 5 stars.
Not good
Verified Purchaser
a year ago
I do love this hair colour so easy to apply but the last couple i have bought left my hair so tacky and greasy looking, I had to wash my hair again to go out.
No, I do not recommend this product.
Originally posted on boots.com
Kerry
Verified Purchaser
Review1
Votes0
5 out of 5 stars.
Hair dye
Verified Purchaser
a year ago
Colour is very vibrant and last a while and my hair looks really shiny and soft. It was easy to apply
Yes, I recommend this product.
Originally posted on boots.com
Amelia
Verified Purchaser
Review1
Votes0
4 out of 5 stars.
Good colour & result
Verified Purchaser
a year ago
Covers grey, easy to use and good shade which blends in with my natural dark brown colour. Over-priced.