DARK OIL lightweight mask 150 ml DARK OIL lightweight mask 150 ml is a nourishing and hydrating hair mask perfect for adding shine and softness to hair. Formulated with natural oils, this mask helps to deeply moisturize and nourish the hair, while helping to reduce frizz and breakage. The lightweight formula won't weigh down your hair, and leaves it looking silky and smooth. It's great for all hair types, and is ideal for those with fine or damaged hair.