Garnier Olia is a permanent hair color that has many positive reviews and comes in multiple red shades. It is available in light, medium and dark garnet red.
Garnier Olia is an oil-based hair color that reduces the risk of damage to colored hair. This product is 100 percent ammonia-free.
Reviews state that this dye is gentle on the hair and scalp, has a pleasant scent, covers gray hair completely and looks natural. Negative reviews say the dye covers poorly, fades quickly and might be linked to hair shedding, but the vast majority of the reviews for this product are positive.