L’Oréal Dia gives your hair fresh colour and radiant shine. From cooler highlights to a deeper brown tone or subtle grey coverage: discover which colour suits your hair and colour wishes within L’Oréal Dia. What’s the difference between Dia Light and Dia Color? Dia Light refreshes previously coloured or lightened...L’Oréal Dia gives your hair fresh colour and radiant shine....
L’Oréal Dia gives your hair fresh colour and radiant shine. From cooler highlights to a deeper brown tone or subtle grey coverage: discover which colour suits your hair and colour wishes within L’Oréal Dia.
What’s the difference between Dia Light and Dia Color?
Dia Light refreshes previously coloured or lightened hair, while Dia Color is mainly for natural hair and softening grey hairs. Within L’Oréal Dia, both colours have their own role: one refines existing lengths, the other adds depth and coverage to your natural colour.
The difference lies in the formula. Dia Light has an acidic formula that adds shine to coloured lengths without lightening your natural hair colour. Dia Color opens the hair cuticles more, so the colour takes well even on untreated hair and makes grey hairs less visible. Both formulas are ammonia-free.
This range belongs to demi-permanent colourings: you mix the colour with a developer and the result fades gradually with washing. A ready-to-use colour rinse works differently. To compare these product types, see the semi- and demi-permanent hair colourings.
This is how you can tell which treatment suits your hair:
Lightened lengths with unwanted warmth: neutralise with a cool tone.
Dull, previously coloured lengths: refresh the existing shade with a gloss.
Natural hair with early grey hairs: colour tone-on-tone with extra coverage.
With Dia L’Oréal Professionnel, you refine your colour precisely. A big change from dark to light requires a colour treatment first.
Which L’Oréal Dia colour suits your hair?
The right L’Oréal Dia colour matches how light or dark your hair is now and the undertone you want. Check your current level first, then the tone. For example, choose a cooler brown or a warm, golden blonde glow.
The colour level indicates lightness or darkness. In the range, 5 means light brown, 6 dark blonde, and 7 blonde. Numbers after the dot describe the colour character. Always compare the full colour name: two shades with the same first number can look different if their tones differ.
Notice a yellow cast in your highlights? Then a violet tone suits; for orange warmth, a blue tone works. A toner corrects the undertone. L’Oréal Dia Light refreshes lightened lengths with a fresh tone. Dia Light Clear makes a colour formula more transparent.
Your hair condition also affects how colour takes. Porous ends absorb pigment faster than healthy roots. Test L’Oréal Dia first on a small hair section to see how the colour develops, especially when darkening light hair.
Which L'Oréal Dia Activator do you need?
The L’Oréal Dia Activator you need depends on your chosen colour, hair condition, and desired colour intensity. Strengths are 6 vol (1.8%), 9 vol (2.7%), and 15 vol (4.5%). The developer activates the colour and partly determines the pigment visibility.
Want to refresh previously coloured, delicate hair subtly? Then 6 vol suits. For more intense colour, choose 9 vol. On natural, uncoloured hair, 15 vol gives a stronger result. Combined with L’Oréal Dia Color, this strength offers up to 70% white hair coverage.
Mix L’Oréal Dia at 1:1.5 ratio: one part colour cream with one and a half parts developer. For 60 ml colour cream, use 90 ml developer. Always measure accurately; extra developer changes the ratio and colour outcome.
Always combine Dia L’Oréal with the matching developer and adjust the formula to your current hair colour and desired result. Roots and previously coloured lengths may need different care. Wear suitable disposable gloves and follow allergy test and safe use instructions carefully.
Buy L’Oréal Dia hair dye at haarspullen.nl
At haarspullen.nl, find L’Oréal Dia colour creams in 60 ml tubes and matching developers in 1000 ml bottles. Choose the shade and strength you need. Colour cream and developer are sold separately so you can mix the right combo for your colour treatment.
Note the colour number, mixing ratio, and strength when satisfied with your L’Oréal Dia result. This helps for easy colour refreshes later. Check lengths again as faded ends may need a different approach than new roots.
After colouring, care for your hair with shampoo and conditioner for coloured hair from L’Oréal Professionnel. Apply conditioner to lengths and ends to keep hair soft, smooth, and easy to comb through.
Not sure which colour or developer suits your hair? Our Team is happy to help. Contact us if you want advice choosing the perfect L’Oréal Dia combo for your colour wishes.
Frequently Asked Questions about L’Oréal Dia
Do you have questions about using the Dia colours? Below you'll find answers to frequently asked questions about processing time, applying on wet or dry hair, and using Dia Light.
How long should Dia Color process?
Dia Color should process for 20 minutes, starting from the end of application. For L’Oréal Dia Color, this full processing time is important to develop the colour according to the professional usage instructions. Always mix Dia L’Oréal Professionnel with the prescribed Dia Activator and keep the ratio on the packaging. Then rinse the hair thoroughly and use the recommended aftercare.
Can I apply L’Oréal Dia Light on wet or dry hair?
L’Oréal Dia Light can be applied on dry hair and, for toning, on washed and towel-dried hair. Which method you choose depends on the colour service and desired result. On dry hair, the usual processing time is 20 minutes; for toning on towel-dried hair, the advice is 5 to 20 minutes. Always follow the instructions of the chosen shade when using Dia L’Oréal.
How do I use L’Oréal Professionnel Dia Light?
You use L’Oréal Professionnel Dia Light by mixing the colour cream with the suitable Dia Activator in a 1:1.5 ratio. Then apply L’Oréal Dia Light with a brush or applicator bottle on dry hair, or if toning, on washed and towel-dried hair. Leave the colour to process for the recommended time. Then rinse the hair well and wash it with shampoo.
