Garnier Olia Hair Color, Ammonia-Free Permanent Hair Dye, Oil-Powered Formula for 100% Gray Coverage and 3x Shinier Hair, Vegan & Cruelty Free, 1.0 Black, 2 Count

I have already started to grow gray hair especially on the middle top of my head so I color my hair black at least twice or thrice a year. I like this because it does not have ammonia so smell is not bad.

Completed the whole process in just under an hour! Only had to use one box and I have short, curly hair, so I am keeping the extra box for any touch ups. Color is true, I had blonde highlights and even those areas are even with the rest of the hair. Highly satisfied 🫶🏽

I’ve been using Garnier Olia 1.0 Black for over six years now, and it’s one of the few permanent hair dyes I keep coming back to. The biggest reason is that it’s ammonia‑free, which makes it much gentler than many other options I’ve tried. It doesn’t have that harsh, eye‑watering chemical smell, and it feels far less irritating on my scalp during application.The application process is straightforward—mix the colorant with the developer, shake well, and apply first to the roots, then through the lengths. The included gloves and conditioner make it easy to do everything at home without extra tools. The formula, powered by oils like sunflower and camellia, spreads smoothly and feels more nourishing than standard dyes.Color‑wise, the shade is a rich, deep black with natural reflects. It provides full gray coverage and makes my hair look healthy and shiny right after coloring. That said, one trade‑off I’ve noticed over the years—and something others mention in reviews—is that it does fade faster than some ammonia‑based dyes. The vibrancy starts to soften after a few weeks, especially with frequent washing.On the plus side, even as it fades, it does so evenly without leaving patchy tones. My hair always feels soft and manageable afterward, with no straw‑like dryness that some dyes can cause. Being vegan and free of silicones, parabens, and phthalates is another bonus for me, as I prefer formulas with fewer harsh additives.Overall, while the color longevity could be better, the comfort, gentleness, and healthy feel it leaves in my hair make it worth sticking with. For anyone who wants a rich black shade without the strong odor and irritation that come with ammonia, this is still one of the best options out there.

Only hair dye I buy now !

es el referente del mercado de gran consumo por una razón clara: logra equilibrar el color vibrante con el cuidado del cabello. Su gran acierto es la fórmula enriquecida con aceites naturales (aguacate, oliva y karité), que contrarresta la sequedad típica de los procesos químicos, dejando una textura suave y brillante que muchos tintes profesionales envidiarían. Su aplicación en casa es sumamente intuitiva, con una consistencia cremosa que no gotea, facilitando una cobertura de canas del 100%. Aunque la duración del color es excelente, como con cualquier tinte permanente, el mantenimiento es clave para evitar que los tonos se oxiden. El aroma, menos agresivo que el de otras marcas gracias a sus componentes frutales, mejora significativamente la experiencia de uso