L'Oréal Professionnel is one of the most trusted names in professional hair colour worldwide. Whether you're a salon professional or a knowledgeable home colourist, understanding the full L'Oréal hair colour range helps you choose the right product for every result — from subtle natural tones to bold fashion shades.
In this guide, we break down every major line in the L'Oréal Professional hair colour portfolio, explaining what each range does best and when to reach for it.
| Range | Best for | Colour type |
|---|---|---|
| Majirel | Permanent colour and grey coverage | Permanent |
| Majimix | Tone boosting / creative mixing | Mix tone |
| Dia Light | Toning, glossing, refreshing lightened hair | Demi-permanent gloss |
| Dia Richesse | Soft demi-permanent colour and natural refreshes | Demi-permanent |
| Dia Color | Modern acidic demi-permanent colour / shine | Demi-permanent |
Why Choose L'Oréal Professional Hair Colour?
L'Oréal has been at the forefront of hair colour innovation for over a century. Their professional ranges are formulated exclusively for salon use, offering superior pigment technology, consistent results, and gentler formulas compared to high-street alternatives. Every L'Oréal professional hair colour product undergoes rigorous testing to ensure reliability and performance.
The key advantage of L'Oréal hair colour is the sheer breadth of the range. No matter what your client needs — permanent grey coverage, ammonia-free colour, a glossy toner, or a high-lift blonde — there's a dedicated L'Oréal line designed specifically for that job.
Majirel: The Flagship Permanent Colour
Majirel is L'Oréal's best-known permanent hair colour range and the backbone of countless salons across the UK. It delivers reliable, long-lasting colour with excellent grey coverage.
Key Features of Majirel
- Ionène G and Incell technology — protects and strengthens hair during the colouring process
- Over 100 shades — from the deepest blacks to the lightest blondes
- Consistent, predictable results — essential for professional use
- Up to 100% white hair coverage
Majirel works with L'Oréal Professionnel developers (oxidants) and is mixed at varying ratios depending on the desired lift and coverage. It's the go-to choice for clients wanting a permanent colour change with full grey coverage.
Majirel Sub-Ranges
The Majirel family has expanded significantly over the years:
- Majirel — the classic permanent colour
- Majirel Cool Cover — enhanced grey coverage with cool-toned results
- Majirel High Lift — for blonde results without bleach (up to 4.5 levels of lift)
- Majirel Metals — fashion-forward metallic tones
- Majirel Glow — translucent, light-diffusing shades for balayage and highlights
INOA: The Ammonia-Free Revolution
INOA (Innovation No Ammonia) changed the game when it launched. This oil-based, ammonia-free permanent hair colour delivers vibrant, long-lasting results without the harsh smell or scalp irritation associated with traditional permanent dyes.
Why Professionals Love INOA
- Oil Delivery System (ODS²) — drives colour deep into the hair fibre using oil rather than ammonia
- No ammonia odour — a more pleasant salon experience for clients
- Optimal scalp comfort — significantly reduced irritation
- Up to 100% white hair coverage
- Visible shine and vibrancy — the oil base leaves hair looking healthier
INOA is ideal for clients who want permanent results but are sensitive to ammonia or simply prefer a gentler colouring experience. It's particularly popular for clients with scalp sensitivity or those who colour frequently.
DIA Richesse: The Demi-Permanent Powerhouse
DIA Richesse is L'Oréal's alkaline demi-permanent colour, sitting between a permanent colour and a simple toner in terms of commitment and coverage.
Best Uses for DIA Richesse
- Blending up to 70% grey hair — softer grow-out than permanent colour
- Tone-on-tone colour enhancement — enriching natural colour with depth and shine
- Colour correction — evening out patchy colour or faded ends
- First-time colour clients — a lower-commitment introduction to colour
DIA Richesse fades gradually and naturally, meaning no harsh regrowth lines. It's a fantastic option for clients who want colour enhancement without the full commitment of a permanent dye.
DIA Light: The Acidic Toner
DIA Light is an acidic demi-permanent colour designed specifically for toning pre-lightened or highlighted hair. Its low pH formula seals the cuticle, leaving hair smooth, shiny, and beautifully toned.
When to Use DIA Light
- Toning highlights and balayage — neutralising unwanted warmth
- Post-lightening gloss — adding shine and sealing the cuticle
- Refreshing faded colour — between permanent colour appointments
- Creating pastel shades — on pre-lightened bases
DIA Light is mixed with L'Oréal's dedicated DIA Activator (rather than standard developers), and the acidic formula makes it exceptionally gentle on already-processed hair.
Comparing the DIA Ranges: Dia Light, Dia Richesse and Dia Color
If your goal is tone, gloss or a colour refresh rather than permanent coverage, compare the DIA ranges. Dia Light is often used for toning lightened hair and adding shine, Dia Richesse suits soft demi-permanent colour refreshes, and Dia Color is another professional demi-permanent option for glossy colour results.
Permanent vs Demi-Permanent: Which Should You Choose?
Choose permanent colour when you need grey coverage, root colour or longer-lasting results. Choose demi-permanent colour when you want to refresh faded lengths, tone lightened hair, add shine or make a softer colour change.
For a detailed comparison, read our guide: Permanent vs Demi-Permanent Hair Colour: Which Professional Range Should You Choose?
Majirouge & Majicontrast: Bold and Vivid Shades
For clients who want head-turning colour, Majirouge offers intensely vibrant reds and coppers within the permanent Majirel system, whilst Majicontrast provides ultra-concentrated fashion shades for creative colour work.
These ranges are perfect for colourists who want to push boundaries — creating vivid reds, coppers, and high-impact fashion tones with the reliability and longevity of L'Oréal's permanent colour technology.
Choosing the Right L'Oréal Colour for Your Needs
| Need | Best L'Oréal Range |
|---|---|
| Full grey coverage (permanent) | Majirel or Majirel Cool Cover |
| Ammonia-free permanent colour | INOA |
| Gentle grey blending (demi-permanent) | DIA Richesse |
| Toning highlights/balayage | DIA Light |
| High-lift blonde without bleach | Majirel High Lift |
| Vivid reds and coppers | Majirouge |
| Fashion/creative colour | Majicontrast |
How to Get the Best Results with L'Oréal Hair Colour
Regardless of which L'Oréal range you choose, there are a few universal tips for achieving the best results:
- Always perform a skin allergy test 48 hours before colouring
- Use the correct developer strength — higher volumes lift more but are harsher on hair
- Follow mixing ratios precisely — L'Oréal's formulas are calibrated for specific ratios
- Time accurately — over-processing can damage hair and alter the final shade
- Invest in colour-safe aftercare — sulphate-free shampoos and colour-protecting conditioners extend the life of your colour
Choosing the Right Developer
Professional colour results also depend on choosing the correct developer. If you are unsure what 10, 20, 30 or 40 Vol developer does, read our developer guide before buying.
Shop L'Oréal Professional Hair Colour at Beauty HairAt Beauty Hair, we stock the full range of L'Oréal Professionnel hair colour products, including Majirel, INOA, DIA Richesse, DIA Light, and all the specialist sub-ranges. Whether you're a professional colourist stocking your salon or an experienced home colourist, you'll find everything you need to achieve stunning L'Oréal colour results.
Browse our L'Oréal Professional collection to find your perfect shade today.
Further Reading on L’Oréal Majirel
If you want detailed shade mixing advice, read our Complete Guide to L’Oréal Majirel Hair Colour: Shades, Mixing & Pro Tips. You can also shop the Majirel MajimixCombo for tone-boosting creative mixing options.
Frequently Asked Questions
Which L’Oréal hair colour is best for grey coverage?
Majirel is typically the first L’Oréal professional range to compare when grey coverage and permanent colour are the main goals.
Is Dia Light permanent?
No. Dia Light is a demi-permanent acidic gloss colour, commonly used for toning, refreshing and adding shine rather than permanent grey coverage.
What is the difference between Majirel and Dia Light?
Majirel is a permanent colour range commonly used for coverage and durable colour. Dia Light is a demi-permanent gloss colour often used to tone lightened hair, refresh faded colour and add shine.
Can L’Oréal professional hair colour be used at home?
Professional hair colour is designed for trained use. Always follow the manufacturer’s instructions, carry out recommended safety checks and speak to a qualified colourist if you are unsure.
What is the difference between L’Oréal Majirel and Dia Light?
Majirel is a permanent hair colour for root coverage and durable colour results. Dia Light is a demi-permanent gloss colour used for toning, refreshing lightened hair and adding shine without committing to permanent colour.
Do I need a developer with L’Oréal professional hair colour?
Yes. Permanent ranges like Majirel require an oxidising developer (typically 10, 20, 30 or 40 vol). Demi-permanent ranges like Dia Light and Dia Richesse use a low-volume developer, typically 6 or 9 vol.
Can I use L’Oréal Dia Richesse at home?
L’Oréal professional ranges including Dia Richesse are formulated for salon use. They are sold to professional buyers, but some home users purchase them with the correct developer.