L’ORÉAL PROFESSIONNEL DIA ACTIVATEUR II 9 VOL 2

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L’Oréal Professionnel Dia Activateur II is a 9 volume (2.7%) cream developer specifically formulated for use with the Dia Light, Dia Richesse, and Dia Color demi-permanent color lines . This medium-low concentration activator is the professional’s choice for services requiring gentle color deposit with up to 2½ levels of darkening, including toning highlights, refreshing faded color, glossing services, and tone-on-tone coloring .
The gentle cream formula is ideal for use on natural, color-treated, or slightly sensitized hair, as well as chemically processed hair including permed, straightened, or smoothed textures . It delivers luminous color results with a radiant, glossy finish while helping to maintain the hair’s softness and shine . The developer also helps cover up to 30% of white hair when used with Dia Richesse .
Suitable for all technical applications including color correction, pre-pigmentation, and highlight toning, this versatile developer allows stylists to customize services to meet individual client needs .
This product is intended for professional use only . To use, mix with Dia Light, Dia Richesse, or Dia Color at a 1:1.5 ratio (50ml color + 75ml activator) . Apply to clean, dry hair and process for 10-20 minutes depending on desired intensity, then emulsify, rinse thoroughly, and follow with a post-color shampoo .
Description

Table of Contents

L’ORÉAL PROFESSIONNEL DIA ACTIVATEUR II 9 VOL 2.7% 1L

PRIMARY USES

1. Low-Concentration Developer for Semi-Permanent Color Services
  • What it does: This 9 volume (2.7%) cream developer is specifically formulated to be mixed with L’Oréal Professionnel demi-permanent color lines including Dia Light, Dia Richesse, and Dia Color . Its low hydrogen peroxide concentration provides gentle activation that deposits color while offering up to 2½ levels of darkening, making it ideal for services requiring minimal lift .
  • How it helps your hair: For the person with color-treated, sensitized, or chemically processed hair, this provides a gentle coloring experience that won’t cause further damage or unwanted lift. For anyone who wants to refresh or tone their color without commitment, this means a low-risk option that respects the hair’s integrity .
2. Specifically Formulated for Slightly Sensitized and Chemically Treated Hair
  • What it does: This developer is designed for natural or slightly sensitized hair and is suitable for color-treated, permed, straightened, or chemically processed hair . The cream formulation allows for even and easy mixture while conditioning agents help protect the hair fiber during the coloring process .
  • How it helps your hair: For the person whose hair has been compromised by previous chemical services, this provides a safe way to refresh or enhance color without causing further stress to the hair fiber. For anyone with naturally fine or delicate hair, this means a gentler coloring experience.
3. Creates Glossy, Radiant Finish with Superior Shine
  • What it does: When paired with Dia Light or Dia Richesse, this activator delivers a radiant, glossy finish that enhances the vibrancy of the final color . The formula is designed to provide luminous color results, enhancing the hair’s natural brilliance while maintaining a healthy appearance .
  • How it helps your hair: For the person whose colored hair looks flat or lacks luster, this provides a glossy, reflective finish that makes hair appear healthier and more vibrant. For anyone wanting that “salon-fresh” shine without constant touch-ups, this means a treatment that delivers brilliant radiance.
4. Ideal for Toning Highlights and Color Refresh Services
  • What it does: This 9 volume developer is the professional’s choice for toning highlights, refreshing existing color, and performing global toning services on non-porous hair . It is perfect for maintaining the vibrancy of pre-colored hair and for gentle tonal adjustments . It can also be used for corrective color and pre-coloration treatments to even out porosity .
  • How it helps your hair: For the person who has recently had highlights or balayage and notices unwanted warmth, this provides a toning solution that corrects brassiness without further lightening. For anyone who wants to maintain cool, neutral, or ash tones between salon visits, this means a targeted correction service.
5. Enables Grey Coverage and Tone-on-Tone Results
  • What it does: When used with Dia Richesse, this developer helps cover up to 30% of white hair while maintaining the same level of color on the hair . It is also suitable for tone-on-tone coloring, delivering richer, more saturated color results .
  • How it helps your hair: For the person with early grey hair who wants natural, subtle coverage without commitment to permanent color, this provides an effective solution. For anyone wanting to darken their hair or add richness without lifting natural pigment, this means a gentle tone-on-tone option.
6. Versatile Developer for All Technical Applications
  • What it does: This developer caters to all technical applications including color correction, pre-pigmentation, refreshing color on lengths and ends, and darkening natural hair . Its versatility makes it a staple product in professional salons for a wide range of demi-permanent services.
  • How it helps your hair: For the person with uneven color or porosity issues, this provides a corrective solution that creates a more uniform canvas. For anyone who has experienced patchy or inconsistent color results, this means a developer that adapts to diverse service needs.
7. Available in Professional 1L Size
  • What it does: This 1 liter (1000ml) bottle is designed for professional salon use, offering exceptional value and ensuring sufficient product volume for multiple services . The large format is ideal for salons that perform frequent toning, glossing, and demi-permanent color services.
  • How it helps your hair: For salons, this provides a cost-effective supply of a staple product. For the client, it means their stylist always has fresh, consistent product available for their service.
8. Developed for Professional Use Only
  • What it does: This product is a professional-grade developer intended for use by trained hair professionals only . It must be mixed with compatible L’Oréal Professionnel color products at specific ratios to ensure safety, efficacy, and optimal results .
  • How it helps your hair: For the client, this ensures their service is performed with professional-grade products under controlled conditions, leading to superior, predictable results. For the stylist, it guarantees a reliable, consistent product for their color services.

SECONDARY USES

1. Highlight and Balayage Toning: Use to tone balayage, ombré, or foiled highlights for a polished, natural-looking finish . For the person with hand-painted highlights that need subtle toning, this provides a service that respects the graduated, natural effect.
2. Color Refresh on Lengths and Ends: Apply to mid-lengths and ends while a permanent color processes on the roots to refresh fading color and ensure a seamless match. For the person whose ends have faded faster than their roots, this provides an even, uniform result.
3. Pre-Coloration Treatment: Apply before permanent color to even out porosity and improve color absorption on porous ends. For the person whose color turns out darker on the ends than at the roots, this provides a preparatory step that creates a more uniform canvas.
4. Glossing and Glaze Services: Apply over natural or colored hair for 10-20 minutes to add intense shine and subtle color reflection without altering the base shade . For the person who wants a “gloss” service between color appointments, this provides a quick, low-commitment shine boost.
5. Lowlight Application: Mix with darker Dia Richesse shades to add dimension and depth to highlighted or blonde hair. For the person with highlights that need more contrast, this provides a way to add lowlights without harsh lines or damage.
6. Chemical Hair Treatment-Compatible Service: Suitable for use on hair that has been permed, straightened, or smoothed, as the gentle formula maintains color vibrancy without compromising hair integrity .
KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

  • Brand: L'Oréal Professionnel Paris
  • Product Name: Dia Activateur II / Diactivateur Activator 9 Vol
  • Concentration: 9 Volumes - 2.7% Hydrogen Peroxide 
  • Volume: 1L / 1000ml 
  • Product Type: Professional cream developer / oxidizing emulsion
  • Formula: Cream emulsion 
  • Compatible With: Dia Light, Dia Richesse, Dia Color (demi-permanent lines) 
  • Intended Use: Professional salon use only 
  • Country of Origin: Spain 

2. TECHNICAL & FORMULATION PROPERTIES

  • Active Agent: Hydrogen Peroxide (2.7%) 
  • Key Function: Activates color pigments for deposit-only services with up to 2½ levels darkening 
  • Mixing Ratio: 1:1.5 (50ml color + 75ml activator) 
  • Processing Time: 10-20 minutes depending on service type 
  • Grey Coverage: Up to 30% white hair coverage with Dia Richesse 
  • Key Inactive Ingredients: Aqua/Water, Cetearyl Alcohol, Glycerin, Ceteareth-25, Tetrasodium Etidronate, Tetrasodium Pyrophosphate, Sodium Salicylate, Phosphoric Acid, Trideceth-2 Carboxamide MEA 
  • Key Features: Creamy texture for easy application, formulated for sensitized and chemically treated hair 
  • Primary Function: Activate demi-permanent hair color for deposit-only services including toning, glossing, refreshing, and tone-on-tone coloring
  • Application: Mix with Dia Light, Dia Richesse, or Dia Color at 1:1.5 ratio, apply to clean, dry hair, process according to service type, emulsify, rinse thoroughly 

3. PHYSICAL ATTRIBUTES

  • Product Form: Cream developer / oxidizing emulsion
  • Texture: Rich, creamy, non-drip 
  • Color: White to off-white cream
  • Packaging: 1L bottle (plastic)

4. HOW TO USE

For Professional Use Only:
This product must be used by a qualified hair professional. Do not use at home.
Preparation:
  1. Wear appropriate protective gloves
  2. Do not use metal bowls or utensils
Mixing:
  1. Dispense one tube (50ml) of Dia Light, Dia Richesse, or Dia Color color cream into a non-metallic bowl or shaker
  2. Add 75ml of Dia Activateur II (9 Vol)
  3. Mix thoroughly until a homogeneous consistency is achieved
  4. The mixing ratio must be maintained at 1:1.5 even when adjusting quantities 
Application:
  1. Apply the mixture to clean, dry, unwashed hair 
  2. Use sectioning techniques appropriate for the desired service (full color, toning, gloss, refresh)
Processing Times by Service Type:
Service Type
Processing Time
Toning highlights / Color refresh
10-20 minutes 
Glossing / Glaze service
10-20 minutes 
Tone-on-tone coloring
15-20 minutes
Darkening natural hair
15-20 minutes
Rinse and Finish:
  1. At the end of the processing time, gently emulsify the product by adding a small amount of lukewarm water and massaging through the hair 
  2. Rinse thoroughly until the water runs clear
  3. Follow with a post-color shampoo 
Pro Tips:
  • Do not use with hydrogen peroxide higher than 15 volumes (4.5%) 
  • If using a shaker, open it immediately after mixing to prevent pressure buildup
  • Always perform a skin sensitivity test (patch test) 48 hours before any coloring service 
  • This developer is ideal for refreshing existing color on lengths and ends while a permanent color is applied to the roots
  • For very porous or damaged hair, reduce processing time to prevent over-darkening
SAFETY HANDLING PRECAUTIONS

1. SAFETY PRECAUTIONS

  • For Professional Use Only: This product is a chemical developer and must only be used by trained professionals 
  • Contains Hydrogen Peroxide: Avoid contact with eyes and skin
  • Protection: Wear suitable protective gloves during the entire mixing and application process 
  • Allergy Warning: Hair colorants can cause severe allergic reactions. A patch test is obligatory 48 hours before each use 
  • Do Not Use If: The client has a rash on the face, a sensitive, irritated, or damaged scalp, has ever experienced any reaction after coloring their hair, or has had a previous reaction to a temporary 'black henna' tattoo 
  • Not for Use on: Eyebrows, eyelashes, or persons under 16 years of age 
  • Ventilation: Ensure adequate ventilation in the work area
  • Mixing: Do not use metal tools or bowls
  • Post-Chemical Treatment: Wait at least 2 weeks after a perm, straightening, or smoothing treatment before using this product 
  • Henna Precaution: Do not use if the hair has been colored with henna or progressive color products 
  • Storage: Keep out of reach of children. Store in a cool, dry place away from direct light and heat 
  • Disposal: Empty the container completely before disposal

2. FIRST AID MEASURES

  • Eye Contact: If product enters eyes, rinse immediately with plenty of clean, lukewarm water for at least 15 minutes. Remove contact lenses if present and easy to do. If irritation persists, seek medical attention .
  • Skin Contact: If product contacts skin, wash off immediately with soap and water. If irritation or redness develops, seek medical advice.
  • Ingestion: This product is not intended for ingestion. If accidentally swallowed, rinse mouth with water and drink a glass of water. Do not induce vomiting. Seek medical attention immediately.
  • Inhalation: If respiratory discomfort occurs, move to fresh air. Seek medical attention if symptoms persist.
Allergic Reaction: Signs may include rash, hives, itching, swelling of the face, lips, tongue, or throat, difficulty breathing, or dizziness. If an allergic reaction is suspected, discontinue use immediately, rinse thoroughly, and seek emergency medical attention .