Back
Academy & Masterclasses
Master advanced techniques through world-class training and certification.
Live Training Sessions
Advanced Balayage Techniques
Master the art of free-hand painting with L'Oréal's Global Ambassador.
DISCOVER MOREColor Correction Masterclass
Fix common color mistakes and achieve flawless results every time.
DISCOVER MOREOn-Demand Certification Programs
Colour Keys 1 - One Day | Colour & Lightening Hair
Master the science of color with this comprehensive foundation course covering color wheel, undertones, and formulation basics.
Haircolor Techniques - Seasonal Trends
Advanced color glazing techniques and toning strategies using Redken's premium acid-based color system.
Colour Specialist
Become an expert in oil delivery systems and ammonia-free coloring with L'Oréal's revolutionary iNOA technology.
Frequently Asked Questions
Expert answers to common questions about L'Oréal Professionnel hair colour.
Permanent hair color penetrates the hair shaft for long-lasting results and 100% grey coverage. Demi-permanent color is gentler, typically ammonia-free, and fades gradually, making it ideal for blending greys, toning, or adding high shine.
For L'Oréal Professionnel, the standard recommendations are:
L'Oréal Professionnel Oxydant (Majirel): 20 Vol (6%) for standard grey coverage and up to 2 levels of lift; 30 Vol (9%) for up to 3 levels of lift.
iNOA Rich Developer: 10 Vol (3%) for deposit, 20 Vol (6%) for grey coverage, and 30 Vol (9%) for up to 3 levels of lift.
Diactivateur (Dia Light/Richesse): 6 Vol (1.8%) for sensitive hair/gloss, 9 Vol (2.7%) to maintain tone, and 15 Vol (4.5%) for grey blending.
Mixing ratios vary by technology. Here is the technical guide for our core portfolio:
- Majirel (Permanent): 1 : 1.5 (e.g., 50ml color + 75ml L'Oréal Professionnel Oxydant).
- iNOA (Ammonia-free ODS): 1 : 1 (e.g., 60g color + 60g iNOA Rich Developer).
- Dia Light (Acidic Demi): 1 : 1.5 (e.g., 50ml color + 75ml Diactivateur).
- Dia Richesse (Alkaline Demi): 1 : 1.5 (e.g., 50ml color + 75ml Diactivateur).
A hair gloss is a professional treatment designed to smooth the hair fiber, add intense shine, and condition for up to six weeks. To achieve this, you can use L'Oréal Professionnel Dia Light, which features an acidic technology that is ultra-gentle on the hair fiber.
The 2025 palette is defined by "Mocha Mousse" browns and vibrant "Cherry Cola" reds using techniques like French Balayage. You can create these looks and rich undertones using L'Oréal Professionnel Majirel or iNOA.
Full coverage aims for 100% bold masking of greys, while French Blending™ uses a "Vertical Weaving" technique for a natural, multi-dimensional, and low-maintenance result. For these services, you can use L'Oréal Professionnel iNOA or Majirel.
Yes, you can embrace first greys gracefully using subtle techniques like Balayage or demi-permanent glosses that require fewer root touch-ups. For a seamless blend, you can use L'Oréal Professionnel Dia Richesse or Dia Light.
The "Bronze" trend features multi-faceted reddish-golden warmth, whereas "Espresso Brunette" is an elegant, cool-toned dark brown with smoky undertones. To achieve these shades, you can use L'Oréal Professionnel iNOA or Majirel.
For ultimate hair protection and color reliability, we recommend the L'Oréal Professionnel Metal Detox protocol on every service. It neutralizes metal particles inside the hair fiber, preventing breakage and ensuring 100% reliable color results.
Ammonia is used in traditional formulas like Majirel for deep pigment penetration and power. For clients with sensitive scalps or those preferring an odorless experience, we offer high-performance Oil Delivery System (ODS) technology with L'Oréal Professionnel iNOA.
0800 0304 034