How to Use L’Oréal Majirel Hair Colour: Mixing Ratio, Developer and Processing Time

L’Oréal Majirel is a permanent professional hair colour, which means the final result is determined by more than the shade number on the tube. The quantity of developer, its strength, the natural starting level and the condition of the hair all affect how the colour develops.

This is why Majirel should not be mixed by eye. Adding extra developer because the formula feels thick can weaken the colour deposit. Using too little can make the mixture difficult to distribute and leave sections inadequately saturated. For a predictable result, the correct ratio must be measured every time.

What Is the Correct Majirel Mixing Ratio?

Standard Majirel hair colour is mixed at a ratio of one part colour to one and a half parts developer, written as 1:1.5.

The current Majirel tube contains 60ml of colour, so a full tube should be mixed with 90ml of L’Oréal Professionnel Cream Oxydant.

If you are using only part of the tube, the same ratio applies. For example, 30ml of Majirel requires 45ml of developer. A 20ml quantity requires 30ml of developer.

Some older Majirel instructions refer to a 50ml tube mixed with 75ml of developer. This is because the previous tube was smaller. The tube size has changed, but the 1:1.5 mixing ratio remains the same. Always check the packaging in front of you rather than relying on an older formula card.

Majirel High Lift is a different colour family and follows its own mixing instructions. The standard 1:1.5 ratio covered here applies to the regular Majirel permanent colour range.

Which Developer Should You Use With Majirel?

Choosing a developer is not about selecting the strongest option. It is about matching the developer to the amount of lift, deposit or white-hair coverage required.

Majirel with 12.5 volume developer

The 12.5 volume developer contains 3.75% peroxide and provides approximately one to one-and-a-half levels of lift.

It is most useful when refreshing previously coloured lengths and ends or when only a small amount of lift is required. Because the lengths have already been exposed to permanent colour, they often do not need the same developer strength used on natural regrowth.

Using a lower-strength developer on the lengths can help avoid unnecessary lift, excessive warmth and repeated processing.

Majirel with 20 volume developer

The 20 volume developer contains 6% peroxide and provides up to two levels of lift on natural hair.

This is the standard choice for many Majirel services. It can be used to colour at the same level, darken naturally lighter hair, achieve moderate lift and follow Majirel’s white-hair coverage rules.

A higher developer is not automatically better for covering grey or white hair. Majirel’s coverage formulas are generally built around 20 volume because successful coverage requires sufficient colour deposit as well as oxidation.

Majirel with 30 volume developer

The 30 volume developer contains 9% peroxide and can provide up to three levels of lift on suitable natural hair.

It is used when the target colour is noticeably lighter than the natural base. However, it will not reliably lighten through old permanent colour. Permanent tint generally lifts natural pigment more effectively than previously deposited artificial pigment.

Applying Majirel with 30 volume over dark permanent colour may expose warmth near the natural roots while leaving the coloured lengths dark. This creates the familiar result of lighter or warmer roots and unchanged ends.

How to Mix Majirel Hair Colour

Wear suitable disposable gloves and use a non-metallic bowl, tint brush and comb. Metal tools can react with oxidative colour products and should not be used during preparation or application.

Measure the required amount of Majirel and developer separately. Combine them in the bowl and mix until the formula is completely smooth. There should be no streaks of unmixed colour cream or pools of developer around the edge.

The mixture should have a creamy consistency that stays where it is placed while still spreading easily through the hair. Do not thin it with water, shampoo or additional developer.

Majirel is applied to dry hair. Hair that is heavily coated with dry shampoo, oils, root concealer or styling wax may not accept colour evenly, so visible build-up should be considered before starting the service.

How Long Should Majirel Be Left On?

The standard Majirel development time is 35 minutes.

Development time should be counted according to the product instructions and should not be shortened simply because the mixture appears dark while processing. Oxidative colour changes appearance as it develops, and the colour visible on the hair is not an accurate preview of the finished result.

Rinsing too early may lead to weaker white-hair coverage, reduced durability or a tone that has not fully developed. Leaving the colour on for much longer will not continue lifting the hair indefinitely and will not correct an unsuitable shade or developer choice.

Once development is complete, add a small amount of water and gently emulsify the colour. Rinse thoroughly until the water runs clear, then cleanse with an appropriate post-colour shampoo.

Should Majirel Be Applied From Roots to Ends?

Permanent colour should not automatically be pulled through the full length at every appointment.

On a regrowth application, begin with the new growth. If the existing lengths still match the target and have lost only a small amount of tone, the fresh mixture may be taken through for approximately the final five minutes.

Where the lengths have faded more noticeably, they may require around 15 minutes. A full development time through the entire length is generally reserved for a first application, a major colour change or hair that has lost both depth and tone.

Repeatedly applying permanent colour from roots to ends can cause pigment build-up. Brunettes may become progressively darker, blondes can lose brightness, and porous ends may grab ash, red or violet tones more strongly than healthier hair.

How Is Majirel Used for White-Hair Coverage?

For hair with up to 50% white, the chosen target shade can generally be used on its own with 20 volume developer.

For hair containing more than 50% white, a reflective fashion shade may need the support of a natural or golden base at the same depth. A common approach is to combine half the desired shade with half the corresponding base shade, maintaining a total of 60ml colour with 90ml of 20 volume developer.

The correct base depends on the desired finish. A cooler target normally requires a suitable natural base, while a warmer target may be supported with a same-level golden base.

This matters because white hair contains little or no natural background pigment. A highly reflective shade used alone may produce visible tone without enough depth to create solid-looking coverage.

Can You Use L’Oréal Majirel at Home?

Majirel is a professional oxidative colour range. The mixing ratio is straightforward, but choosing the correct formula requires an accurate assessment of the natural level, existing artificial colour, underlying warmth, percentage of white hair, porosity and previous chemical services.

The shade shown on a colour chart is a target, not a guarantee of the result on every starting colour. For example, applying a cool level-eight shade to natural level-five hair will not create the same finish shown on a light-blonde swatch.

Read the safety instructions supplied with the product before every use. An allergy alert test must be completed 48 hours before each colour application, even when the product has been used previously without a reaction. Hair-colour products are not intended for people under 16, and colour should not be applied to an irritated, damaged or reactive scalp.

The most reliable Majirel result comes from treating the shade, developer, mixing ratio and processing time as one complete formula. Measure the 1:1.5 ratio accurately, select the developer for the actual starting base and allow the full 35-minute development time. Those details are what separate predictable permanent colour from an expensive colour correction.