L’ORÉAL PROFESSIONNEL INOA 3 DARK BROWN

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L’Oréal Professionnel iNOA 3 Dark Brown is an ammonia-free permanent hair color powered by patented ODS² (Oil Delivery System) technology containing 60% oil, delivering rich, deep, natural dark brown results with 100% grey coverage and up to 3 levels of lift . This Level 3 fundamental shade—also described as 3.0 Deep Natural Brown—provides maximum depth and opacity for clients seeking a true, authentic dark brown with no unwanted warm or cool reflects .
The revolutionary formula replaces traditional ammonia with an oil-based delivery system, providing a pleasant, odorless coloring experience while offering 48% more shine, 43% less hair porosity, and +20% scalp hydration . The vegan formula features a fluid, non-drip texture that is faster and easier to apply, mix, and rinse compared to previous iNOA formulations, with results lasting up to 6 weeks .
Mix at a 1:1 ratio (1 tube color to 1 part developer) with iNOA Oil Developer 10-volume (3%), 20-volume (6%), or 30-volume (9%), depending on desired lift . For white hair coverage up to 70%, use the target shade alone; for 70-100% white hair, use deep or extra coverage natural shades for deeper, more opaque coverage . Development time is 35 minutes at room temperature.
The tube is made of 95% recycled aluminum for reduced environmental impact, and the packaging features dematerialized instructions to save up to 79 tons of paper annually .
This product is intended for professional use only. To use, mix 60g of iNOA 3 Dark Brown with 60g of iNOA Oil Developer, apply to dry, unwashed hair using sectioning techniques, process for 35 minutes, then emulsify gently, rinse thoroughly, and finish with iNOA Post-Color Shampoo or Metal Detox Shampoo . Always perform a patch test 48 hours before any coloring service.
Description

Table of Contents

L’ORÉAL PROFESSIONNEL INOA 3 DARK BROWN

PRIMARY USES

1. Ammonia-Free Permanent Hair Color Powered by Oil Delivery System
  • What it does: iNOA 3 is a permanent hair color formulated with the exclusive ODS² (Oil Delivery System) patented technology containing 60% oil, which replaces traditional ammonia to deliver high-impact color while providing optimal scalp comfort . The formula is completely odorless and vegan, containing zero animal-derived ingredients or byproducts, making it a cleaner choice for professional coloring services .
  • How it helps your hair: For the person who is sensitive to strong chemical odors or experiences scalp discomfort with traditional ammonia-based colors, this provides a pleasant, odorless coloring experience. For anyone seeking rich, long-lasting dark brown color without compromising hair health or scalp comfort, this means a professional formula that respects both hair integrity and sensory comfort.
2. 3 Dark Brown Shade – Deep Natural Brown
  • What it does: Shade 3 is a Dark Brown, also described as 3.0 Deep Natural Brown, delivering a rich, deep, intense dark brown result with natural undertones . The “3” or “3.0” code indicates a Level 3 Dark Brown fundamental shade, providing maximum depth and opacity for clients seeking a true, rich dark brown with no unwanted warm or cool reflects.
  • How it helps your hair: For the person wanting a rich, deep, natural-looking dark brown that adds depth and sophistication, this provides a versatile Level 3 shade that works beautifully for both full coverage and root touch-ups. For anyone who wants their dark brown to look healthy, vibrant, and natural, this means a shade formulated for pure, authentic dark brown results.
3. Up to 3 Levels of Lift with 100% Grey Coverage
  • What it does: iNOA 3 lifts hair up to three levels while delivering 100% coverage of grey and white hair with long-lasting results . The 60% oil base helps preserve the natural protective film of the hair while ensuring maximum color intensity, and the formula provides visibly healthier hair with 48% more shine compared to unwashed hair .
  • How it helps your hair: For the person with grey or white hair who wants complete, opaque coverage while also achieving a rich dark brown result, this provides a single-product solution that addresses both needs. For anyone who has struggled with patchy coverage or grey hairs that resist color, this means a professional formula trusted by stylists for consistent, beautiful results.
4. 6 Weeks of Hydration and Nourishment
  • What it does: The ODS technology provides up to 6 weeks of intensive hydration and care, keeping hair hydrated, soft, and shiny between salon visits . The oil-based formula ensures hair is 43% less porous and provides +20% scalp hydration, maintaining curl patterns and hair health.
  • How it helps your hair: For the person who wants their dark brown color to look fresh, glossy, and healthy beyond the first week, this provides long-lasting hydration and shine. For anyone who has experienced dry, dull hair after coloring, this means a formula that maintains moisture and radiance.
5. Fluid Formula for Faster, Easier Application
  • What it does: The improved formula features a fluid, non-drip texture that is faster and easier to mix, apply, rinse, and extend to the lengths compared to previous formulations . The texture allows for precise, no-drip application that stays where applied.
  • How it helps your hair: For the stylist performing precise color work, this provides a manageable formula that enables clean, professional application. For the client, the fluid consistency ensures even coverage and predictable results with minimal mess.
6. Mixable with 10, 20, or 30 Volume Developer
  • What it does: iNOA mixes at a 1:1 ratio (1 tube color to 1 part developer) with iNOA Oil Developer 10-vol (3%), 20-vol (6%), or 30-vol (9%), depending on desired lift and coverage . 10-volume provides up to 1 level of lift for subtle shifts and toning; 20-volume provides up to 2 levels for grey coverage and natural enhancement; 30-volume provides up to 3 levels for visible color changes.
  • How it helps your hair: For the stylist, this provides the flexibility to customize the lift and intensity based on client needs. For the client, it means a tailored service that achieves the perfect dark brown result.
7. Eco-Responsible Packaging with 95% Recycled Aluminum
  • What it does: The tube is made of 95% recycled aluminum, reducing environmental impact by replacing virgin aluminum with recycled material . The packaging features dematerialized instructions to save up to 79 tons of paper annually.
  • How it helps your hair: For the person who prefers sustainable, eco-conscious beauty products, this provides a professional color option that aligns with their environmental values. For salons seeking more sustainable practices, this means a product with significantly reduced environmental impact.

SECONDARY USES

1. Root Touch-Up on Dark Brown Hair: Apply only to regrowth area where natural hair needs to be recolored to match previously colored lengths, using 20 or 30 volume developer at 1:1 ratio, processing for 35 minutes. For the person maintaining their dark brown color between full applications, this provides a precise root touch-up solution that keeps color consistent and even.
2. Global Application on Virgin Hair: Apply evenly to dry, unwashed virgin hair for an all-over dark brown transformation, using 20 volume for up to 2 levels lift or 30 volume for up to 3 levels lift, processing for 35 minutes . For the person wanting to achieve a rich, deep dark brown from natural hair, this provides the ideal single-process solution.
3. Grey Coverage for Resistant Hair: For clients with up to 70% white hair, use the target shade alone with 20 or 30 volume developer. For 70-100% white hair coverage, use deep or extra coverage natural shades for deeper, more opaque coverage . For the person with emerging grey who wants full, opaque coverage, this provides a reliable approach.
4. Take Through with iNOA (Virgin Hair Only): For slight color changes, take through for the final 5 minutes; for moderate changes, final 20 minutes; for dramatic changes, take through immediately. For the stylist performing full-color transformations on virgin hair, this provides professional guidelines for optimal results.
5. Take Through with Dia Light: To best preserve previously colored lengths, take through with Dia Light using 9-volume Diactivateur for the final 10-20 minutes of development, depending on desired color change. For the person wanting to refresh color on already-processed hair while preserving hair integrity, this provides a gentler approach.
6. Pre-lightened Hair Service: For pre-lightened or bleached hair, mist Metal Detox Pre-Treatment Spray on each section before applying iNOA formula for enhanced protection and color results. For the person with previously lightened hair seeking a dark brown refresh, this provides a protective approach.
KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

  • Brand: L'Oréal Professionnel Paris
  • Product Name: iNOA Permanent Hair Color / iNOA 3 Dark Brown / INOA FUND 3
  • Shade: 3 Dark Brown / 3.0 Deep Natural Brown
  • Shade Level: Level 3 (Dark Brown) with .0 Natural base
  • Product Type: Ammonia-free permanent hair color / Cream hair dye
  • Key Benefits: Ammonia-free, 100% grey coverage, up to 3 levels lift, 48% more shine, 60% oil formula, ODS technology, odorless, vegan
  • Key Technology: ODS² (Oil Delivery System) patented technology
  • Volume: 60g / 60ml / 2.1 oz
  • Mixing Ratio: 1:1 (60g color to 60g developer)
  • Recommended Developers: iNOA Oil Developer 10-vol (3%), 20-vol (6%), or 30-vol (9%)
  • Processing Time: 35 minutes
  • Grey Coverage: Up to 100%
  • Maximum Lift: Up to 3 levels
  • Formula Integrity: Ammonia-free, vegan (no animal-derived ingredients or by-products)
  • Proven Results: 48% more shine vs unwashed hair; 43% less hair porosity; 20% more scalp hydration
  • Packaging: Tube made of 95% recycled aluminum
  • Made in: Europe
  • Product Codes: EAN 3474637131012
  • Manufacturer: L'Oréal Professionnel Paris

2. TECHNICAL & FORMULATION PROPERTIES

  • Key Technology 1: ODS² (Oil Delivery System) – patented technology using 60% oil to deliver color without ammonia
  • Key Technology 2: 60% Oil base – preserves natural protective film of hair, provides optimal scalp comfort
  • Shade Description: Dark Brown / 3.0 Deep Natural Brown – rich, deep, intense dark brown with natural undertones
  • Full Ingredient List: PARAFFINUM LIQUIDUM / MINERAL OIL / HUILE MINERALE • AQUA / WATER / EAU • ETHANOLAMINE • COCO-GLUCOSIDE • SODIUM LAURYL SULFATE • PEG-40 HYDROGENATED CASTOR OIL • HYDROXYPROPYL GUAR • SODIUM METABISULFITE • EDTA • HYDROXYBENZOMORPHOLINE • TOLUENE-2,5-DIAMINE • ASCORBIC ACID • N,N-BIS(2-HYDROXYETHYL)-p-PHENYLENEDIAMINE SULFATE • m-AMINOPHENOL • 2-AMINO-3-HYDROXYPYRIDINE • 2,4-DIAMINOPHENOXYETHANOL HCL • THIOGLYCERIN
  • Primary Function: Provide permanent, ammonia-free dark brown color with up to 100% grey coverage and up to 3 levels lift
  • Application: Mix 1:1 with iNOA Oil Developer, apply to dry, unwashed hair, process 35 minutes, emulsify, rinse

3. PHYSICAL ATTRIBUTES

  • Product Form: Cream hair color / Fluid formula
  • Texture: Smooth, creamy, fluid, non-drip, easy to mix and apply
  • Color: 3 Dark Brown / Deep Natural Brown
  • Consistency: Smooth, spreadable cream, no-drip
  • Scent: Odorless (ammonia-free)
  • Finish: High-shine, glossy, rich deep brown, up to 48% more shine
  • Packaging: Tube (60g) with sustainable packaging (95% recycled aluminum)
  • Product Dimensions: 8 x 3 x 3 cm; 60 g
  • Item Weight: 60 g

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 suitable disposable gloves during the entire mixing, application, and rinsing process 
  2. Use a non-metallic bowl and brush for mixing
  3. Do not use on persons under 16 years of age 
  4. Perform a patch test 48 hours before each coloring service
Developer Selection:
Developer Volume
Lift Level
Best For
10-vol (3%)
Up to 1 level
Toning, color refreshing, subtle shifts
20-vol (6%)
Up to 2 levels
Grey/white coverage, natural enhancement, darkening 
30-vol (9%)
Up to 3 levels
Visible color changes, maximum lift 
Mixing:
  • Measure 60g (1 tube) of iNOA 3 Dark Brown into a non-metallic bowl
  • Add 60g of iNOA Oil Developer at the chosen volume
  • Mix thoroughly until a smooth, creamy, homogeneous texture is obtained 
  • Mixing ratio: 1:1 (60g color to 60g developer)
  • When a shaker is used, open immediately after mixing to avoid the shaker bursting and the product overflowing 
White Hair Coverage Guidelines:
  • Up to 70% white hair: Use target shade alone with 20 or 30 volume developer 
  • 70-100% white hair for deeper/opaque coverage: Use deep or extra coverage natural shades at the same level 
  • For thick and/or resistant hair with 50% or more grey hair, apply the grey coverage mixture 
Application:
  1. Apply to dry, unwashed hair 
  2. Apply to the root area first, then to lengths and ends as needed
  3. Ensure even saturation from roots to ends
  4. Due to its specific texture, the product requires being pressed against the scalp during application
Development:
  • Processing time: 35 minutes at room temperature 
  • Do not add water during processing
  • Development time starts at the end of the root's application
Rinse and Finish:
  1. After the development time, gently emulsify the product to remove color from the scalp by adding a small amount of lukewarm water 
  2. Rinse thoroughly until water runs clear 
  3. Shampoo twice with L'Oréal Professionnel Série Expert Metal Detox Shampoo or iNOA Post-Color Shampoo 
  4. Follow with Metal Detox Mask for optimal results 
Pro Tips:
  • Do not use on hair colored with henna or metallic salts 
  • Wait at least 2 weeks after a perm, straightening, or smoothing treatment before applying 
  • Avoid letting the product drip onto the scalp or skin; rinse thoroughly and abundantly if contact occurs
  • The product must be used with an appropriate developer
  • Mix only the amount needed for the current application; do not store leftover mixture
SAFETY HANDLING PRECAUTIONS

1. SAFETY PRECAUTIONS

  • For Professional Use Only: This product is a professional chemical color and must only be used by trained professionals 
  • Hair colorants can cause severe allergic reactions 
  • Patch Test: A patch test is obligatory 48 hours before each use. Even if you or your client have already used coloring products before 
  • Protection: Wear suitable disposable gloves during the preparation, application, and rinsing of the product 
  • Do Not Use If: The client has a rash on the face, sensitive/irritated/damaged scalp, has ever experienced a reaction after coloring their hair, or has ever experienced a reaction to a temporary "black henna" tattoo 
  • Not for Use on: Eyelashes, eyebrows (may cause blindness), or persons under 16 years of age 
  • Temporary "black henna" tattoos may increase the risk of allergy 
  • IGNORING AN ALLERGY CAN BE LIFE-THREATENING
  • Contains: Phenylenediamines (toluenediamines), resorcinol, ammonia 
  • Storage: Keep out of reach of children. Store upright in a cool, dry place away from direct light and heat
  • Compatibility: Use exclusively with iNOA Oil Developer 10, 20, or 30 volume maximum; do not use with hydrogen peroxide greater than 30 volume (9%) 
  • Read and follow the instruction leaflet 

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 your 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.