• Monteillo UNDER Activating Cream hair developer and matching treatment tube shown on a white background with text reading 'UNDER Technical Guide,' 'Mix 1:1.5,' 'Apply to Dry Hair,' 'Develop 25-45 mins,' and volume percentages at the bottom.
  • Hairways Under Colour Service product display featuring a silver tube of under Prime Ready developer and a white bottle of under Prime Ready activator cream, with purple and black text on a light gray background.
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Montibello UNDER Activating Cream 1000ml

Montibello UNDER Activating Cream 1000ml

29442
ยฃ7.13
ยฃ7.13
Sale Sold out (ยฃ8.56 Inc. VAT)
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Montibello UNDER Activating Cream 1000ml is the dedicated professional developer for the Montibello UNDER permanent colour system.

Formulated with biotechnological active ingredients of natural origin and Vegan Collagen Shield, it is designed to optimise colour development, improve mixing consistency and support natural-looking, even results when used with UNDER Hair Color.

  • Dedicated developer for Montibello UNDER Hair Color
  • Available in 4.5% / 15 vol, 7.5% / 25 vol and 10.5% / 35 vol
  • Mixes with UNDER Hair Color at a 1:1.5 ratio
  • Vegan Collagen Shield technology
  • Smooth, even mixing consistency
  • Quick, precise, non-drip application
  • Designed for optimal colour adherence
  • Quick rinsing
  • 1000ml professional size
  • For professional use only

Designed Specifically for Montibello UNDER

Professional developer engineered for consistent mixing, precise application and optimised colour development.

UNDER System Dedicated developer for UNDER Hair Color
Smooth Mixing Creates an even, workable colour consistency
Non-Drip Supports quick, precise application
Vegan Collagen Shield Supports hair & scalp resilience

UNDER Developer Quick Guide

Key technical information at a glance.

Mix 1 : 1.5
Strengths 15 / 25 / 35 Vol
Colour UNDER Hair Color
Use Professional

Complete Your Montibello UNDER Colour Service

Pair the activating cream with UNDER Hair Color for the complete professional colour system.

Step 1 โ€ข Colour
UNDER Hair Color 60g Choose your professional permanent colour shade
You're Here
UNDER Activating Cream Select the appropriate developer strength
Shade Reference
UNDER Shade Chart Compare shades & tonal families before formulation
Which UNDER Developer Strength Should I Choose?
4.5%
15 Vol UNDER Activating Cream strength option
7.5%
25 Vol UNDER Activating Cream strength option
10.5%
35 Vol UNDER Activating Cream strength option

Select developer strength according to professional hair diagnosis, starting level and desired colour result. Follow Montibello technical guidance rather than choosing developer strength by volume alone.

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Why Use UNDER Activating Cream?

Montibello UNDER Activating Cream is formulated specifically for colouring processes using UNDER Hair Color and is designed to work in synergy with the colour cream.

  • Dedicated UNDER Formula: Specially developed for use with Montibello UNDER Hair Color.
  • Biotechnological Actives: Ingredients of natural origin help optimise colour development for realistic, natural-looking results.
  • Vegan Collagen Shield: Helps provide additional resilience and protection to the hair and scalp.
  • Even Mixing: Creates a smooth, homogeneous colour mixture.
  • Non-Drip Application: Supports quick and precise professional application.
  • Optimal Adherence: Designed to help the colour mixture adhere evenly to the hair.
  • Quick Rinse: Formulated for efficient removal following colour development.

Use exclusively with Montibello UNDER Hair Color according to professional diagnosis and technical guidance.

Mixing Ratio & How To Use
  1. Wear suitable protective gloves during preparation, application and rinsing.
  2. Mix 1 part UNDER Hair Color with 1.5 parts UNDER Activating Cream.
  3. Select the appropriate developer strength according to the professional diagnosis and desired result.
  4. Mix thoroughly until a smooth, even consistency is achieved.
  5. Apply according to the UNDER Hair Color technical instructions.
  6. Development time will vary according to the desired result and colour formulation.
  7. Emulsify and rinse thoroughly following the colour service.
Do not use metallic utensils such as metal bowls, clips or combs when preparing or applying the UNDER colour mixture.
4.5%, 7.5% or 10.5%?

UNDER Activating Cream is available in three professional strengths:

  • 4.5% / 15 Vol
  • 7.5% / 25 Vol
  • 10.5% / 35 Vol

The correct choice depends on factors including:

  • Natural starting level
  • Percentage of grey
  • Existing artificial colour
  • Hair condition and porosity
  • Chosen UNDER shade
  • Desired lift or deposit

Pair your selected strength with Montibello UNDER Hair Color using the recommended 1:1.5 ratio.

Developer strength should be selected through professional colour diagnosis. Do not assume a particular volume is suitable solely from the desired shade.
Product Details & Ingredients
  • Brand: Montibello
  • Range: UNDER
  • Product: Activating Cream
  • Product Type: Professional Oxidising Cream / Hair Colour Developer
  • Designed For: Montibello UNDER Hair Color
  • Available Strengths: 4.5% / 15 vol, 7.5% / 25 vol, 10.5% / 35 vol
  • Mixing Ratio: 1:1.5 with UNDER Hair Color
  • Technology: Vegan Collagen Shield
  • Size: 1000ml
  • Use: Professional use only

Ingredients:
Water (Aqua) (Eau), Hydrogen Peroxide, Cetearyl Alcohol, Ceteareth-23, Octyldodecanol, Boswellia Serrata Gum, Chenopodium Quinoa Seed Extract, Citric Acid, Dimethylglucamine, Dipropylene Glycol, Disodium Pyrophosphate, Etidronic Acid, Glycine Max (Soybean) Seed Extract, Hydrolyzed Rice Protein, Lauric Acid, Lauryl Alcohol Diphosphonic Acid, Lens Esculenta (Lentil) Seed Extract, Potassium Sorbate, Propanediol, Propylene Glycol, Saccharomyces Ferment Lysate Filtrate, Sodium Benzoate, Sodium Lauryl Sulfate, Sodium Stannate, Tocopherol, Triolein, Zingiber Officinale (Ginger) Root Extract, Fragrance (Parfum), Tetramethyl Acetyloctahydronaphthalenes.

Product formulations may change. Always check the current product packaging for the latest ingredient, allergy and safety information.
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