Garnier Olia Permanent Hair Color – 4.0 Dark Brown, Ammonia-Free Oil-Powered Formula, 2-Pack for 100% Gray Coverage

Garnier Olia 4.0 Dark Brown is an ammonia-free, oil-powered permanent hair dye that delivers rich dark-brown pigment, 100% gray coverage, and visibly shinier, hydrated hair.

Olia rethinks at-home permanent color by replacing harsh ammonia with a 60% natural oil blend (sunflower and camellia) that helps drive color deep into the hair shaft while minimizing damage and odor. The kit arrives complete with developer applicator, colorant tube, after-color conditioner, gloves, and instructions so you can achieve salon-like results at home. This 2-count pack is convenient for full-head application or for longer hair that needs extra product.

How does Olia’s oil-powered formula protect hair compared with regular dyes?

The formula uses a high concentration of natural oils rather than ammonia to open the hair cuticle and deliver pigment. Those oils help preserve moisture and smooth the hair surface, which reduces the dry, brittle feel often experienced after coloring.

• 60% oil blend with sunflower and camellia seed oils to hydrate during processing
• Non-drip cream texture for even application and less mess
• Less pronounced chemical smell than ammonia-based dyes
• Includes after-color conditioner to seal and shine

Will this shade cover gray hair completely and last?

Garnier Olia is formulated for full gray coverage and creates long-lasting color thanks to its ODS™ technology that anchors pigments inside the hair fiber. Results usually remain vibrant for several weeks; longevity will vary with hair porosity, washing frequency, and aftercare.

• Designed for 100% gray coverage on resistant hairs
• ODS™ technology helps pigments penetrate and hold color
• Color durability supported by using color-safe shampoos and conditioners
• Two boxes cover medium-to-long hair; one box often suffices for short to medium lengths

How do I use the 4.0 Dark Brown kit safely and effectively at home?

Follow the step-by-step leaflet included with the kit: mix the colorant into the developer bottle, apply to dry, unwashed hair, process for the recommended time, then rinse and use the after-color conditioner. Always perform a patch test 48 hours before full application to check for sensitivity.

• Apply to dry, unwashed hair for best root coverage
• Process time typically around 30 minutes—follow the instruction leaflet
• Rinse until water runs clear; apply the included conditioner to lock in moisture and shine
• Use additional boxes for long or very thick hair

Is this product vegan and cruelty-free?

Yes. Garnier Olia is vegan-formulated (no animal-derived ingredients) and Leaping Bunny certified, which verifies it meets cruelty-free standards. The formula also excludes silicones, parabens, and phthalates for a cleaner ingredient profile.

• Leaping Bunny certified cruelty-free
• Formulated without animal-derived ingredients (vegan)
• Free from ammonia, silicones, parabens, and phthalates
• Best used with color-preserving hair care for extended vibrancy

Who is this for: Garnier Olia 4.0 Dark Brown is created for people who want permanent, salon-caliber dark-brown color at home without ammonia. It suits users seeking full gray coverage, enhanced shine, and a gentler formula—especially those with dry, color-treated, or texture-sensitive hair. Choose this kit if you prefer a plant-oil-forward approach and want an easy at-home routine with professional-looking results.

Ingredients

DEVELOPER: 1071397 AQUA/WATER/EAU, PARAFFINUM LIQUIDUM/MINERAL OIL/HUILE MINERALE, CETEARYL ALCOHOL, HYDROGEN PEROXIDE, STEARETH-20, PEG-4 RAPESEEDAMIDE, GLYCERIN, POLYQUATERNIUM-6, HEXADIMETHRINE CHLORIDE, TOCOPHEROL, PENTASODIUM PENTETATE, SODIUM STANNATE, TETRASODIUM PYROPHOSPHATE, PHOSPHORIC ACID. F.I.L.# D42424/9 AFTER COLOR CONDITIONER: 1119728 A AQUA/WATER/EAU, CETEARYL ALCOHOL, BEHENTRIMONIUM CHLORIDE, CETYL ESTERS, TOCOPHEROL, TRIDECETH-6, CHLORHEXIDINE DIGLUCONATE, HELIANTHUS ANNUUS SEED OIL/SUNFLOWER SEED OIL, CAMELLIA OLEIFERA SEED OIL, AMODIMETHICONE, ISOPROPYL ALCOHOL, PARFUM/FRAGRANCE, CITRIC ACID, CETRIMONIUM CHLORIDE. F.I.L.# D180530/1 US PATENTS: 7,223,385; 7,485,289 COLORANT: 1177016 PARAFFINUM LIQUIDUM/MINERAL OIL/HUILE MINERALE, AQUA/WATER/EAU, ETHANOLAMINE, DECYL GLUCOSIDE, SODIUM LAURYL SULFATE, PEG-40 HYDROGENATED CASTOR OIL, PARFUM/FRAGRANCE, DISODIUM COCOAMPHODIACETATE, TOLUENE-2,5-DIAMINE, RESORCINOL, HYDROXYPROPYL GUAR, SODIUM METABISULFITE, EDTA, M-AMINOPHENOL, ASCORBIC ACID, HELIANTHUS ANNUUS SEED OIL/SUNFLOWER SEED OIL, LIMNANTHES ALBA SEED OIL/MEADOWFOAM SEED OIL, PASSIFLORA INCARNATA/PASSIFLORA INCARNATA SEED OIL, CAMELLIA OLEIFERA SEED OIL, HYDROXYBENZOMORPHOLINE, 2,4-DIAMINOPHENOXYETHANOL HCL, THIOGLYCERIN, TOCOPHEROL. F.I.L.# D180157/1 US PATENTS: 7,060,107; 7,988,737; 7,988,738; 8,066,781; 8,114,170; 7,494,513 US PAT PENDING