Garnier Olia Permanent Hair Color — 4.0 Dark Brown, Ammonia-Free Oil-Powered Kit, 2 Count for 100% Gray Coverage and Extra Shine

Garnier Olia 4.0 Dark Brown is an ammonia-free, oil-powered permanent hair color kit that delivers rich, long-lasting dark brown results with 100% gray coverage and noticeably shinier, hydrated hair.

Garnier Olia swaps ammonia for a 60% natural oil blend (sunflower and camellia seed oils) and ODS™ technology to transport color deep into the hair fiber while keeping hair soft and glossy. The boxed kit contains a developer applicator bottle, colorant tube, gloves, and an after-color conditioner so you can complete a full at-home color service. Olia is vegan, Leaping Bunny certified, and formulated without silicones, parabens, or phthalates, making it a popular choice for people who want salon-quality results with a gentler formula.

How does this oil-powered formula affect shine and texture?

Olia’s 60% oil blend both carries color molecules into the hair and helps seal the cuticle, which contributes to a smoother surface and increased reflectivity. Users typically see hair that feels more conditioned and appears up to three times shinier compared with uncolored, unwashed hair.

• 60% blend of sunflower and camellia seed oils for surface smoothing
• Non-drip, velvety cream for even coverage and less mess
• After-color conditioner included to lock in moisture and shine

Will Garnier Olia 4.0 cover gray hair completely?

Yes — Olia’s permanent formulation is designed to deliver complete gray coverage, including stubborn grays at the roots. Results are long-lasting and meant to provide even pigment and natural-looking depth across the hair.

• Permanent color for 100% gray coverage
• ODS™ technology helps colorants penetrate deeply for consistent results
• Follow package timings (typically ~30 minutes) for optimal coverage

How easy is it to use Garnier Olia at home?

The kit comes with everything required for an at-home application and follows a straightforward mix-apply-wait-rinse routine. Clear instructions guide each step; one to two boxes usually cover short to medium hair, while longer hair may require two to three boxes.

• Developer bottle plus colorant tube for simple mixing and application
• Gloves and an instruction leaflet included — no extra tools needed
• Apply to dry, unwashed hair; process, rinse until water runs clear, then condition

Are there safety or scent differences compared with traditional dyes?

Because Olia is ammonia-free, it tends to have a milder odor than conventional permanent dyes while still delivering the same level of permanent color. The formula avoids silicones and parabens and carries a delicate floral fragrance for a more pleasant application experience.

• No ammonia — reduced strong chemical smell during application
• Floral fragrance for a more pleasant at-home service
• Vegan and Leaping Bunny certified for cruelty-free assurance

Who is this for: Garnier Olia 4.0 Dark Brown is aimed at people who want reliable, permanent dark brown color with full gray coverage while minimizing exposure to harsh ingredients. It’s suited to those who prefer at-home convenience, value vegan and cruelty-free products, and want visibly shinier, conditioned hair after coloring. Choose one box for roots or touch-ups on short hair, two boxes for full head coverage on medium lengths, and two to three boxes for long or very thick hair.

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