Colour 4.66 by Yellow
PERMANENT COLOR. 70 different shades. Contains natural ingredients to care for the cosmetic effect in the hair. Yellow colours respect the hair fiber using only a small alkaline agent content in the colour. Contains argan oil and aloetrix with smoothing and protective properties. Low alkaline agent allows for color to lighten and color gently, ensuring maximum protection for the hair’s natural balance. Color results are vibrant and true to tone and can gently lighten up to 5 levels of lift. Perfect grey coverage, exceptionally long-lasting colour results. Creates a natural, bright and even color result with exceptional durability. NOT TESTED ON ANIMALS
Key Features
- Vibrant and true-to-tone color results
- Gentle lightening up to 5 levels of lift
- Perfect grey coverage
- Long-lasting color with natural finish
- Contains argan oil and aloetrix for smoothing and protection
- Low alkaline agent for hair health
| Feature | Detail |
|---|---|
| Color Type | Permanent |
| Shade Range | 70 different shades |
| Lightening Level | Up to 5 levels |
| Key Ingredients | Argan oil, aloetrix |
| Animal Testing | Not tested on animals |
FAQ
Can this color be used on grey hair?
Yes, Colour 4.66 provides perfect grey coverage and is ideal for covering grey hairs while maintaining a natural, bright appearance.
Does this product lighten the hair?
Yes, it can gently lighten the hair up to 5 levels of lift, preserving the hair’s natural balance with minimal damage.
Is the color formula safe for all hair types?
The low alkaline agent and natural ingredients make it suitable for most hair types, especially those seeking gentle color treatment.

Carl Henderson –
I’ve used this color on my grey hair and it covers perfectly. The shade is bright and even, and my hair feels smoother after application. No dryness or frizz, which I usually get with other permanent dyes.
Anthony Quinn –
The color lasts longer than expected. I’ve worn it for over two months and it still looks vibrant. The argan oil helps keep my hair soft and manageable.
Ian Robertson –
Great coverage for grey hair. The lightening is subtle and natural. I noticed my hair felt healthier after using it, though it might not be suitable for very damaged hair.
Oliver Watson –
I tried several permanent dyes before finding this one. The true-to-tone result and gentle formula made a big difference. My hair looks fresh and bright without being harsh.
Pippa Skinner –
The color is vibrant and lasts well. I did notice a slight lift, but it’s within the expected range. The protective ingredients help maintain hair texture.