Garnier olia permanent hair colour 10 deep black is part of the first oil powered home hair colour range a technology breakthrough oil does more than condition it actually boosts the colouring process with 60 oils including natural flower oilsr the resultsr r maximum colour performance even without ammonia a vivid permanent colour perfect grey coverager improves the visible quality of hair ndash hair feels 35 softer 17 shinierr a new sensorial experience ndas