L'Oréal Professionnel Booster

Majirel Boosters are highly pigmented, permanent coloring creams designed to enhance, intensify, or better neutralize classic Majirel or Majirouge shades. They’re used as mix-in shades — depending on whether you want to add more warm reflect, or boost cool-toned neutralization. The range is intended for professional salon use only.

Benefits

• Highly concentrated pigments for adjusting the intensity and reflect of the final color
• Allow you to boost warm reflects (e.g., orange/red/magenta) or add cool neutralization (e.g., blue/green/violet)
• Compatible with Majirel and Majirouge colors
• Creamy texture for easy mixing and even application
• The new Majirel formula offers easier mixing and a reduced ammonia odor

Boosters work like concentrated “reflect regulators” — adding a small amount to your mix adjusts the final tone without changing the level of the color.

• They’re used in two directions:
  • Warm Boosters: increase the richness of warm reflects.
  • Cool Boosters: strengthen cool neutralization.

How to use

1. PREPARATION
Majirel Booster cannot be used on its own with developer. It must always be mixed with a Majirel / Majirouge shade first, and only then combined with the developer.

Color service (boosting / neutralizing the tone)

• Mixing ratio: 0.25 + 0.75 + 1.5

For a full-head color service, mix:

• Majirel shade: at least 45 ml (≈ 3/4 of a tube)
• Majirel Booster cream: up to 15 ml (≈ 1/4 of a tube)
• Developer: 90 ml

Adjust the amount of booster to the hair’s level and the intensity you want. The higher the booster proportion, the stronger the reflect or neutralization.

Contrast service (highlights on a dark base)

• Mixing ratio: 0.3 + 0.7 + 1.5

For contrast techniques on a dark base, mix:

• Base Contrast: 40 ml
• Majirel Booster Orange / Red / Magenta: 20 ml
• Developer: 90 ml

This service is designed for bold color accents on dark hair (contrast strands).

2. APPLICATION & RINSING

1. Apply the mixture with a brush to dry, unwashed hair.
2. Start application at the roots.
3. Apply enough product at the roots to ensure the best possible grey coverage.
4. Respect the recommended processing time:
   • 35 minutes
   • exception: Majirel High Lift – 50 minutes
5. Processing time is counted from the end of the root application.
6. During processing, the mixture may change color — this is normal and does not affect the final result.
7. After the processing time, gently emulsify the color for a few minutes.
8. Rinse thoroughly until the water runs clear.
9. Shampoo the hair with a color-care shampoo — L’Oréal Professionnel Metal Detox Shampoo is recommended.

3. WHITE / GREY COVERAGE Color service (boosting / neutralizing)

A) Technique for boosting warm tones (Orange, Red)
0–50% grey:

• use the target shade + 1/4 tube of Majirel Booster.

50–100% grey:

• increase the booster proportion to 1/2 tube.

B) Neutralization technique (Blue, Green, Violet)
0–50% grey:

• use the target shade + 1/4 tube of Majirel Booster.

50–100% grey:

• at the roots: apply the chosen shade mixed with a fundamental (natural) or golden shade at the same level.
• through mid-lengths and ends: apply the chosen shade + 1/4 tube of Majirel Booster.

Contrast service (highlights on a dark base)

• This service is not intended for covering white/grey hair (it does not cover greys).