Discover the science behind Dia color.
Dia color Demi-permanent colour with no ammonia*.
- 3x shinier hair**.
- Up to 70% grey coverage.
- 100% true-to-tone natural reflects.
- Up to 91% natural-origin ingredients***.
*no ammonia, for a pleasant smell.
**instrumental test vs previous formula.
***Individual shades vary - Maximum ingredient naturality is 92%, minimum is 84%.
![](https://www.lorealprofessionnel.co.uk/-/media/project/loreal/brand-sites/lp/shared/baseline/dia-color/landing-page/dia-color-2-performance-1.jpg?rev=-1&cx=0.54&cy=0.56&cw=2560&ch=2560&hash=E9A619C92B32C3BF15195A4F068A37AA)
Tested, co-created & approved by pros.
Explore our collection of 39 shades perfect for high shine and natural looking colour results.
![](https://www.lorealprofessionnel.co.uk/-/media/project/loreal/brand-sites/lp/emea/uk/hair-care/32857-dia-color-asset-updates_4_7680x4795px_v1.jpg?rev=e4b67e4560fe49beb2f96f4d991c7e02&cx=0.49&cy=0.47&cw=4680&ch=2922&hash=7A3FBABE35FE3092C2AE691DC2028F56)
Co-developed with pros.
My Hair [iD] Professional color consultation.
My Hair [iD] is a personalized color consultation tool featuring both iNOA & Dia color.
Unique inspirations, virtual try-on, professional diagnosis and product recommendation combined in an all-in-one experience.
Start the experience now:
![](https://www.lorealprofessionnel.co.uk/-/media/project/loreal/brand-sites/lp/shared/baseline/dia-color/landing-page/dia-color-5-my-hair.jpg?rev=-1&cx=0.53&cy=0.54&cw=2560&ch=2560&hash=DDE85F1ADC70C4C571EA00B01EB43BE0)
Let’s see it from you!
Post your hair looks and insights with #Diacolor on Instagram & Tiktok!
How to take the perfect picture?
Try a clean background, good lighting and close-up on hair.
Don’t hesitate to hold it slightly to valorize the result and to make the professional difference stand out! Use the hashtag #Diacolor for a chance to get featured on @lorealpro.
![](https://www.lorealprofessionnel.co.uk/-/media/project/loreal/brand-sites/lp/shared/baseline/dia-color/landing-page/dia-color-8-social.jpg?rev=-1&cx=0.55&cy=0.56&cw=2560&ch=2560&hash=96F0D8426EF10E7EE2B29FF3DBE7C7AC)