Is Olia less effective than a hair color with ammonia?

No, even though Olia does not contain ammonia it's just as effective as a classic hair color with ammonia

How effective is Olia on grey hair?

Olia is a permanent hair color and delivers on up to 100% grey coverage for up to 6 weeks.

Many brands have oils nowadays… How is Olia different?

When a hair color contains oil, it is usually in the conditioner. In Olia, the oil is concentrated in the colorant itself to boost the coloring process by propelling color deep into the hair fiber.

What if only my roots need coloring?

You may need to vary the development time throughout your hair. Follow the instruction leaflet for timing and application techniques. Use our step by tep tool or watch the how-to video.

How much product should I use to get full hair coloration?

Like all hair coloring, it depends on your hair length and thickness. For medium to long hair use 2 boxes. For long hair or hair that is very thick, you may need to use more than 2 boxes.

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Color your world, naturally! 🌈

AMMONIA FREE - Gentle on hair, ensuring a healthier dyeing experience.
BRILLIANT COLOR - Achieve vivid, radiant color with natural reflects.
SHINE HYDRATION - Up to 3x shinier and visibly healthier hair.
OIL POWERED FORMULA - Infused with 60% oils for deep, long-lasting color.
VEGAN CRUELTY FREE - Feel good about your choice with no animal-derived ingredients.

Garnier Hair Color Olia is an ammonia-free, oil-rich permanent hair dye that delivers 100% gray coverage and vibrant color while being vegan and cruelty-free. Infused with sunflower and camellia oils, it ensures your hair remains hydrated, silky, and up to three times shinier than uncolored hair.