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A silver-grey hair colour for home use might sound straightforward at first. In practice, however, your starting colour, the proportion of grey hair and the development time can often lead to a result that looks different from the picture on the box. If you’re looking to buy a permanent hair colour, you should pay attention not only to the shade, but also to coverage, application and ingredients.
A cool grey hair colour develops differently on blonde, light brown or already coloured hair. Particularly on darker base hair, a silvery effect may be less noticeable. Any existing red or gold undertones can also influence the final result.
According to the product description, Poly Palette U71 Cool Silver Grey is a silver-grey shade with a cool, ashy undertone. Even so, the actual colour impression depends on your individual starting colour and hair texture.
Full grey coverage is realistic only when the colour is applied evenly and left on for long enough. Varying amounts of grey, very porous hair or uneven application can lead to inconsistent results.
Poly Palette U71 is advertised by the brand as offering 100% grey coverage. This claim comes from the brand’s product communication and should not be taken as a guarantee for every individual head of hair.
A hair colour with conditioning ingredients may leave your hair feeling softer after rinsing. However, it does not replace a suitable hair care routine and won’t automatically prevent the colour from fading over time. For an even appearance, thorough rinsing and using the included conditioning treatment are essential.
The name U71 Cool Silver Grey indicates a cool silver-grey tone. If you’re looking for an ash-grey hair colour without warm undertones, check the colour chart and recommended starting shades on the packaging before you buy. If your hair is very dark, lightening may be necessary; the colour should not be used outside the specified application guidelines.
Poly Palette U71 is designed as a permanent hair colour. According to the product description, deeply penetrating pigments are intended to deliver long-lasting colour and intense colour payoff. How long the shade remains visible depends on factors such as how often you wash your hair, water temperature, hair porosity and the care products you use.
If you want to cover grey hair, make sure you have enough product. For very long or thick hair, one pack may not be enough. You can avoid having to buy more mid-application by realistically estimating the amount you’ll need beforehand.
The colour cream is mixed with a developer lotion. The product information lists hydrogen peroxide, phenylenediamines and resorcinol among the ingredients. For this reason, a 48-hour allergy test is required before use, following the instructions on the pack.
Important notes:
The full list of ingredients and safety instructions on the specific packaging are definitive.
The application should be carried out according to the instructions on the pack. The product information provided generally outlines the following steps:
Do not keep or reuse the mixture for a later application. For the most even result, it’s also advisable not to treat your hair with heavily oil-based or coating products beforehand.
The selection below transparently organises the products provided according to their intended use. Only the first product is a hair colour; the other two items belong to the category of grey bathroom accessories and are not alternatives to hair colour.
Why this product fits the profile: The ready-to-use combination of colour cream and developer is aimed at adults looking for a permanent silver-grey hair colour for home application.
The product information clearly states the shade, development time and 100% grey coverage. This allows you to check the key buying criteria before ordering.
Cool U71 silver-grey tone, permanent colour, included conditioning treatment and, according to the product description, a silicone-free formula with almond oil.
Why this product fits the profile: This item is not a hair colour, but a complementary grey bathroom accessory for buyers looking for functional storage and a consistent colour scheme.
The wall mount keeps the brush off the floor. The flexible head is designed for hard-to-reach areas under the rim.
Grey design, flexible brush shape and wall mounting with drip-dry capability.
Why this product fits the profile: This item is aimed at heavy bathroom users and is clearly distinct from the Poly Palette U71 hair colour. It complements a grey bathroom but does not replace hair care.
The cover reduces splashing during use, while the holder catches drips and allows the brush to drain.
Polypropylene construction, cover and compact dimensions of approximately 36 × 12.5 cm including holder.
We’ve put together a full, regularly updated list of products that fully meet these strict selection criteria and the safety regulations in force in the EU.
According to the product information, the colour is designed for 100% grey coverage. However, the result depends on your starting colour, the proportion of grey, hair texture and even application. The manufacturer’s instructions on the packaging are definitive for your specific use.
For the U71 shade, the product information provided states approximately 30 minutes. The development time should not be extended on your own initiative. Always follow the current pack instructions, as these contain product-specific safety information.
A cool grey hair colour like U71 is described by the product as being designed for a silver-grey, cool effect with anti-yellow undertones. Even so, warm base hair, mineral-rich water or fading pigments can alter the colour impression. Gentle care products suitable for coloured hair can help keep the colour looking more even for longer.