Garnier Olia Permanent Hair Color — 5.03 Medium Neutral Brown, Ammonia-Free Oil-Powered, 100% Gray Coverage

Garnier Olia 5.03 Medium Neutral Brown is an ammonia-free, oil-powered permanent hair dye that delivers vivid, long-lasting color with 100% gray coverage and up to 3× shinier hair.

This at-home color kit uses a 60% natural oil blend (sunflower and camellia oils) instead of ammonia to help the color penetrate the hair fiber while keeping strands hydrated and smoother to the touch. The kit contains everything needed for application — developer applicator bottle, colorant tube, after-color conditioner, gloves, and instructions — and is formulated without silicones, parabens, and animal-derived ingredients.

How does the oil-powered formula affect color and shine?

Olia’s oil-dominant formula helps carry color molecules deeper into the hair while reducing the harsh smell and potential dryness associated with ammonia-based dyes. The natural flower oils also leave hair feeling softer and reflecting more light for noticeable shine.

• 60% oil blend (sunflower and camellia) for smoother cuticle finish
• Propels color deep into the fiber for even saturation
• Up to 3× shinier hair versus uncolored, unwashed hair
• Minimal odor compared with traditional ammonia dyes

Will Garnier Olia cover gray hair and how long does it last?

Yes — the formula is designed to provide full, natural-looking gray coverage on first application. Results are permanent until roots grow out; color vibrancy typically holds for several weeks but can fade over time depending on washing frequency and hair care.

• 100% gray coverage on first application
• Permanent color that grows out with hair, not a wash-out
• Best longevity when paired with color-protecting shampoo and conditioner
• Use 1–2 boxes for short to medium hair, 2–3 for long hair

How simple is the at-home application and what’s included?

Application is straightforward: mix the colorant tube into the developer bottle, shake, then apply to dry, unwashed hair. Process for the time shown in the instructions, rinse until water runs clear, then apply the included after-color conditioner for improved softness and shine.

• Developer applicator bottle for controlled application
• Colorant tube and after-color conditioner included in each box
• Disposable gloves and step-by-step instruction sheet provided
• Suitable for full head application or targeted root touch-ups

Are there any ingredients or lifestyle claims I should know?

Garnier Olia avoids ammonia, silicones, and parabens and carries vegan and cruelty-free claims, making it a choice for shoppers seeking gentler, more eco-conscious at-home coloring options. It is not a conditioning treatment replacement but aims to leave hair feeling healthier than many permanent dyes.

• Ammonia-free permanent color with natural flower oils
• Vegan formula and cruelty-free production
• No silicones or parabens included
• Not a medical or restorative treatment — follow care directions

Who is this for: Garnier Olia 5.03 Medium Neutral Brown is suited to people who want salon-quality permanent color at home with full gray coverage and enhanced shine, prefer formulas without ammonia, and value vegan and cruelty-free ingredients. It’s ideal for routine color refreshes, event prep, or those switching to a gentler at-home dyeing routine; choose two boxes for medium-long hair and three if your hair is very long or thick.

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: 1183556 B 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, 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, M-AMINOPHENOL, P-AMINOPHENOL, 6-HYDROXYINDOLE, 2,4-DIAMINOPHENOXYETHANOL HCL, THIOGLYCERIN, TOCOPHEROL. F.I.L.# D180163/1 US PATENTS: 7,060,107; 7,988,737; 7,988,738; 8,066,781; 8,114,170; 7,494,513 US PAT PENDING