Garnier Olia Gloss 10-Minute Tinted Hair Mask, Cowboy Copper

Garnier Olia Gloss Cowboy Copper is a semi-permanent tinted hair mask for refreshing colour and adding shine. It is intended for natural or coloured brunette hair, with a leave-on time of up to 10 minutes and colour claimed to last up to six washes.

At a glance

Adds temporary colour and a glossy finish, with the shade described as Cowboy Copper.
The listing claims colour for up to six washes and shine for up to 72 hours.
Apply to clean, wet hair with gloves, leave for up to 10 minutes, then rinse thoroughly until the water runs clear.
Not recommended for grey coverage or bleached hair.

Price

£8.99Save 31%

Reference price: ~~£12.99~~

Price checked: 12 Nov 2026

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Often bought together

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Pros and cons

Pros

A short, up-to-10-minute treatment provides a temporary colour refresh rather than a permanent dye result.
The product is presented as a cream mask combining colour with conditioning and shine-related benefits.
The manufacturer describes the formula as vegan and approved by Cruelty Free International.

Technical specifications

13 specifications

Identity
Brand	Garnier
Range	Olia Gloss Tinted Hair Mask
Shade	Olia Gloss Cowboy Copper
Hair colour suitability	Dark Brown

Formula and use
Item form	Cream
Hair type	All, Curly, Straight
Permanence	Semi-Permanent
Leave-on time	10 Minutes
Container	Tube
Number of items	1

Claims and formulation
Listed benefits	Conditioning, Damage Repair, Hair Coloring, Shine Enhancing, Tone Correction
Material features	Cruelty Free, Vegan
Manufacturer-stated formula	With an 8% restoring complex and nourishing flower oils. Vegan formula, approved by Cruelty Free International; no silicones, ethanol or mineral oil.

What to know before buying

Listing details to confirm

The product details list Cowboy Copper and identify dark brown hair as suitable, while the broader use description refers to brunette hair and cool, ashy tones. Customer feedback also includes reports of orange results on coloured hair. Shade outcome may vary, so check the selected shade and suitability before use. The six-wash colour duration and 72-hour shine are manufacturer claims, not guaranteed results. Apply with gloves and rinse until the water runs clear. Ingredient details may change, so see the back of the pack for the latest list.

Who is it for?

A good fit for

Brunettes seeking a temporary colour refresh between colour services.
Buyers wanting a tinted hair mask with a short, up-to-10-minute application.

Less suited to

People seeking grey coverage or a product recommended for bleached hair.
Anyone seeking permanent colour rather than a shade claimed to fade over washes.

Garnier Olia Gloss 10-Minute Tinted Hair Mask, Cowboy Copper · photo 2 — Additional product photo 2

Customer reviews on Amazon

4 / 5 · 268 ratings

5 stars57%57%
4 stars16%16%
3 stars12%12%
2 stars5%5%
1 star10%10%

Customer feedback highlights glossy shine and softness, with some customers describing the colour’s longevity positively. Colour results and effectiveness are mixed, including reports that the shade turned coloured hair orange and that the product did not work for some. These reports matter for a temporary brunette tint, where the intended tone may not match every starting colour. The listing claims colour for up to six washes, but the feedback does not show that outcome is consistent.

Positive themes

Customers report glossy shine and softer-feeling hair.
Some customers describe the colour’s longevity positively.

Mixed feedback

Feedback on colour results is mixed, including reports of orange tones on coloured hair.
Customers disagree on effectiveness, with some finding it works well and others saying it does not.

Frequently asked questions

How long should the mask be left on?

Apply it to clean, wet hair while wearing gloves and leave it for up to 10 minutes. The directions say the time can depend on the intensity desired. Rinse until the water runs clear.

How long is the colour claimed to last?

The listing says the temporary colour can last for up to six washes. This is a manufacturer claim, and results may vary.

Is it suitable for grey or bleached hair?

The manufacturer says it is not recommended for grey coverage or bleached hair. It describes the product as intended for natural or coloured brunette hair.

What should I expect from the Cowboy Copper shade?

The listing identifies the shade as Cowboy Copper and describes cool, ashy tones, but customer feedback reports mixed colour outcomes, including orange results on some coloured hair.